2024知到答案 信号与系统（海南大学） 完整智慧树网课章节测试答案
第一章 单元测试
1、单选题：
计算 .w64974416349s .brush0 { fill: rgb(255,255,255); } .w64974416349s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416349s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416349s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416349s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416349s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } cos(10)cos(30) tt - 的周期T=（ ）。
选项：
A:.w64974416338s .brush0 { fill: rgb(255,255,255); } .w64974416338s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416338s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416338s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416338s .font1 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416338s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 3 p
B:.w64974416226s .brush0 { fill: rgb(255,255,255); } .w64974416226s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416226s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416226s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416226s .font1 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416226s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 4 p
C:.w64974416240s .brush0 { fill: rgb(255,255,255); } .w64974416240s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416240s .font0 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416240s .font1 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } p
D:.w64974416253s .brush0 { fill: rgb(255,255,255); } .w64974416253s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416253s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416253s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416253s .font1 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416253s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 5 p
答案: 【.w64974416253s .brush0 { fill: rgb(255,255,255); } .w64974416253s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416253s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416253s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416253s .font1 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416253s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 5 p】
2、单选题：
下列说法正确的是（ ）：
选项：
A:两个周期信号x(t)，y(t)的周期分别为2和 .w64974416196s .brush0 { fill: rgb(255,255,255); } .w64974416196s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416196s .font0 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416196s .font1 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } p ，其和信号x(t)+y(t)是周期信号。
B:两个周期信号x(t)，y(t)的周期分别为2和 .w64974416211s .brush0 { fill: rgb(255,255,255); } .w64974416211s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416211s .pen1 { stroke: rgb(0,0,0); stroke-width: 16; stroke-linejoin: round; } .w64974416211s .pen2 { stroke: rgb(0,0,0); stroke-width: 32; stroke-linejoin: round; } .w64974416211s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416211s .font1 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2 ，则信号x(t)+y(t) 是周期信号。
C:两个周期信号x(t)，y(t)的周期分别为2和3，其和信号x(t)+y(t)是周期信号。
D:两个周期信号x(t)，y(t)的和x(t)+y(t)一定是周期信号。
答案: 【两个周期信号x(t)，y(t)的周期分别为2和3，其和信号x(t)+y(t)是周期信号。】
3、单选题：
下列说法不正确的是（ ）。
选项：
A:u(t)是功率信号；
B:et为能量信号
C:时限信号(仅在有限时间区间不为零的非周期信号)为能量信号。
D:一般周期信号为功率信号。
答案: 【et为能量信号】
4、单选题：
已经信号f(t)如下图所示，其反转右移的信号f1(t)是（ ）
选项：
A:
B:
C:
D:
答案: 【】
5、多选题：
为得到x(−2t+4)，可以将x(t)经过下列哪种运算（ ）
选项：
A:x(t)右移2后再翻转压缩成原来的一半
B:x(t)翻转压缩成原来的一半后，右移2
C:x(t)翻转压缩后成原来的一半后，左移2
D:x(t)左移4后再翻转压缩成原来的一半
答案: 【x(t)翻转压缩成原来的一半后，右移2;
x(t)左移4后再翻转压缩成原来的一半】
6、单选题：
.w64974416167s .brush0 { fill: rgb(255,255,255); } .w64974416167s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416167s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416167s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416167s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416167s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416167s .font3 { font-size: 241px; font-family: Symbol, serif; } .w64974416167s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416167s .font5 { font-size: 530px; font-family: Symbol, serif; } .w64974416167s .font6 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } (sin)() 6 tttdt p d ¥ -¥ +- ò = （ ）。
选项：
A:.w64974416131s .brush0 { fill: rgb(255,255,255); } .w64974416131s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416131s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416131s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416131s .font1 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416131s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416131s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1 2 p +
B:.w64974416143s .brush0 { fill: rgb(255,255,255); } .w64974416143s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416143s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416143s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416143s .font1 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416143s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416143s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1 52 p +
C:.w64974416155s .brush0 { fill: rgb(255,255,255); } .w64974416155s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416155s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416155s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416155s .font1 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416155s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416155s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1 32 p +
D:.w64974416119s .brush0 { fill: rgb(255,255,255); } .w64974416119s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416119s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416119s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416119s .font1 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416119s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416119s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1 62 p +
答案: 【.w64974416119s .brush0 { fill: rgb(255,255,255); } .w64974416119s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416119s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416119s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416119s .font1 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416119s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416119s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1 62 p +】
7、单选题：
下列关于冲激函数性质的表达式不正确的是（ ）。
选项：
A:.w64974416084s .brush0 { fill: rgb(255,255,255); } .w64974416084s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416084s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416084s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416084s .font2 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416084s .font3 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416084s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416084s .font5 { font-size: 530px; font-family: Symbol, serif; } .w64974416084s .font6 { font-size: 242px; font-family: Symbol, serif; } .w64974416084s .font7 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( d ) ( t t e t t d = ò ¥ -
B:.w64974416075s .brush0 { fill: rgb(255,255,255); } .w64974416075s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416075s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416075s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416075s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416075s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416075s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( ) - ( t t d d =
C:.w64974416108s .brush0 { fill: rgb(255,255,255); } .w64974416108s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416108s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416108s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416108s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416108s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416108s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( ) 0 ( ) ( ) ( t f t t f d d =
D:.w64974416096s .brush0 { fill: rgb(255,255,255); } .w64974416096s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416096s .pen1 { stroke: rgb(0,0,0); stroke-width: 16; stroke-linejoin: round; } .w64974416096s .font0 { font-size: 473px; font-family: Symbol, serif; } .w64974416096s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416096s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416096s .font3 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416096s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416096s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ( ) t a at d d 1 ) ( =
答案: 【.w64974416096s .brush0 { fill: rgb(255,255,255); } .w64974416096s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416096s .pen1 { stroke: rgb(0,0,0); stroke-width: 16; stroke-linejoin: round; } .w64974416096s .font0 { font-size: 473px; font-family: Symbol, serif; } .w64974416096s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416096s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416096s .font3 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416096s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416096s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ( ) t a at d d 1 ) ( =】
8、单选题：
已知信号 .w64974416362s .brush0 { fill: rgb(255,255,255); } .w64974416362s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416362s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416362s .font1 { font-size: 262px; font-family: "Times New Roman", serif; } .w64974416362s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416362s .font3 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416362s .font4 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416362s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } )] 2 ( ) ( )[ 2 ( )] ( ) 2 ( [ 2 ) ( 1 - - + + - + = t t t t t t f e e e e ，则 .w64974416094s .brush0 { fill: rgb(255,255,255); } .w64974416094s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416094s .pen1 { stroke: rgb(0,0,0); stroke-width: 16; stroke-linejoin: round; } .w64974416094s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416094s .font1 { font-size: 373px; font-family: Symbol, serif; } .w64974416094s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416094s .font3 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416094s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } )] 1 ( ) 2 1 ( )[ 2 1 ( ) ( - - + - = t t t f t f e e 的波形是（ ）。
选项：
A:
B:
C:
D:
答案: 【】
9、多选题：
.w64974416340s .brush0 { fill: rgb(255,255,255); } .w64974416340s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416340s .font0 { font-size: 579px; font-family: Symbol, serif; } .w64974416340s .pen1 { stroke: rgb(0,0,0); stroke-width: 16; stroke-linejoin: round; } .w64974416340s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416340s .font2 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416340s .font3 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416340s .font4 { font-size: 262px; font-family: "Times New Roman", serif; } .w64974416340s .font5 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416340s .font6 { font-size: 242px; font-family: Symbol, serif; } .w64974416340s .font7 { font-size: 373px; font-family: Symbol, serif; } .w64974416340s .font8 { font-size: 374px; font-family: 宋体; } .w64974416340s .font9 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } [ ] dt t e d t t ) ( ) 1 2 d - - （ 的计算值等于（ ）。
选项：
A:.w64974416291s .brush0 { fill: rgb(255,255,255); } .w64974416291s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416291s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416291s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416291s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416291s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416291s .font4 { font-size: 374px; font-family: 宋体; } .w64974416291s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } )] ( ) ( 2 )[ 1 t t t d d ¢ + - - （
B:.w64974416314s .brush0 { fill: rgb(255,255,255); } .w64974416314s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416314s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416314s .font1 { font-size: 262px; font-family: "Times New Roman", serif; } .w64974416314s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416314s .font3 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416314s .font4 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416314s .font5 { font-size: 373px; font-family: Symbol, serif; } .w64974416314s .font6 { font-size: 242px; font-family: Symbol, serif; } .w64974416314s .font7 { font-size: 374px; font-family: 宋体; } .w64974416314s .font8 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } )] ( ) ( 2 )[ 1 2 2 t e t e t t t d d ¢ + - - - - （
C:.w64974416302s .brush0 { fill: rgb(255,255,255); } .w64974416302s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416302s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416302s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416302s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416302s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416302s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( ) ( t t d d ¢ +
D:.w64974416326s .brush0 { fill: rgb(255,255,255); } .w64974416326s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416326s .font0 { font-size: 488px; font-family: Symbol, serif; } .w64974416326s .pen1 { stroke: rgb(0,0,0); stroke-width: 16; stroke-linejoin: round; } .w64974416326s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416326s .font2 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416326s .font3 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416326s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416326s .font5 { font-size: 374px; font-family: 宋体; } .w64974416326s .font6 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } [ ] dt t d t ) ( ) 1 d - （
答案: 【.w64974416314s .brush0 { fill: rgb(255,255,255); } .w64974416314s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416314s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416314s .font1 { font-size: 262px; font-family: "Times New Roman", serif; } .w64974416314s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416314s .font3 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416314s .font4 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416314s .font5 { font-size: 373px; font-family: Symbol, serif; } .w64974416314s .font6 { font-size: 242px; font-family: Symbol, serif; } .w64974416314s .font7 { font-size: 374px; font-family: 宋体; } .w64974416314s .font8 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } )] ( ) ( 2 )[ 1 2 2 t e t e t t t d d ¢ + - - - - （ ;
.w64974416302s .brush0 { fill: rgb(255,255,255); } .w64974416302s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416302s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416302s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416302s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416302s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416302s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( ) ( t t d d ¢ + ;
.w64974416326s .brush0 { fill: rgb(255,255,255); } .w64974416326s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416326s .font0 { font-size: 488px; font-family: Symbol, serif; } .w64974416326s .pen1 { stroke: rgb(0,0,0); stroke-width: 16; stroke-linejoin: round; } .w64974416326s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416326s .font2 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416326s .font3 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416326s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416326s .font5 { font-size: 374px; font-family: 宋体; } .w64974416326s .font6 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } [ ] dt t d t ) ( ) 1 d - （】
10、多选题：
sgn(t)信号的表达式为（ ）
选项：
A:.w64974416288s .brush0 { fill: rgb(255,255,255); } .w64974416288s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416288s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416288s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416288s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416288s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416288s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2()1 t e --+
B:.w64974416300s .brush0 { fill: rgb(255,255,255); } .w64974416300s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416300s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416300s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416300s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416300s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416300s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()() tt ee --
C:.w64974416325s .brush0 { fill: rgb(255,255,255); } .w64974416325s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416325s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416325s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416325s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416325s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416325s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()() tt ee +-
D:.w64974416312s .brush0 { fill: rgb(255,255,255); } .w64974416312s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416312s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416312s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416312s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416312s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416312s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2()1 t e -
答案: 【.w64974416288s .brush0 { fill: rgb(255,255,255); } .w64974416288s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416288s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416288s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416288s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416288s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416288s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2()1 t e --+ ;
.w64974416300s .brush0 { fill: rgb(255,255,255); } .w64974416300s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416300s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416300s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416300s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416300s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416300s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()() tt ee -- ;
.w64974416312s .brush0 { fill: rgb(255,255,255); } .w64974416312s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416312s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416312s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416312s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416312s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416312s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2()1 t e -】
11、单选题：
设系统零状态响应与激励的关系是： .w64974416276s .brush0 { fill: rgb(255,255,255); } .w64974416276s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416276s .pen1 { stroke: rgb(0,0,0); stroke-width: 16; stroke-linejoin: round; } .w64974416276s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416276s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416276s .font2 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416276s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416276s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( ) ( t f t y zs = ，则以下表述不对的是（ ）
选项：
A:系统是稳定的
B:系统是线性的
C:系统是因果的
D:系统是时不变的
答案: 【系统是线性的】
12、单选题：
下列微分或差分方程所描述的系统为线性时不变系统的是（ ）
选项：
A:.w64974416224s .brush0 { fill: rgb(255,255,255); } .w64974416224s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416224s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416224s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416224s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416224s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416224s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()3(1)2() ykykfk +-=
B:.w64974416238s .brush0 { fill: rgb(255,255,255); } .w64974416238s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416238s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416238s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416238s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416238s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()(1)(2)() ykykykfk +--=
C:.w64974416251s .brush0 { fill: rgb(255,255,255); } .w64974416251s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416251s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416251s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416251s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416251s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } '()3()'()2() ytytftft +=+
D:.w64974416264s .brush0 { fill: rgb(255,255,255); } .w64974416264s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416264s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416264s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416264s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416264s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } '()2()() ytytft +=-
答案: 【.w64974416251s .brush0 { fill: rgb(255,255,255); } .w64974416251s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416251s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416251s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416251s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416251s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } '()3()'()2() ytytftft +=+】
13、判断题：
若系统激励信号为e(t)，响应信号r(t)，则系统 .w64974416209s .brush0 { fill: rgb(255,255,255); } .w64974416209s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416209s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416209s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416209s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416209s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()cos(100)() rttet = 是线性时变系统。（ ）
选项：
A:对
B:错
答案: 【对】
14、判断题：
若系统激励信号为e(t)，响应信号r(t)，则系统 .w64974416250s .brush0 { fill: rgb(255,255,255); } .w64974416250s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416250s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416250s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416250s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416250s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()(-) rtet = 是因果系统。（ ）
选项：
A:错
B:对
答案: 【错】
15、单选题：
试判断系统 .w64974416236s .brush0 { fill: rgb(255,255,255); } .w64974416236s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416236s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416236s .font1 { font-style: italic; font-size: 260px; font-family: "Times New Roman", serif; } .w64974416236s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416236s .font3 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416236s .font4 { font-size: 241px; font-family: Symbol, serif; } .w64974416236s .font5 { font-size: 373px; font-family: Symbol, serif; } .w64974416236s .font6 { font-size: 530px; font-family: Symbol, serif; } .w64974416236s .font7 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()()() t ytxtxd tt -¥ =+ ò 特性，其中y(0)为初始条件，x(t)为输入信号，y(t)为输出信号。（ ）
选项：
A:线性时不变
B:线性时变
C:非线性时不变
D:非线性时变
答案: 【线性时不变】
第二章 单元测试
1、单选题：
已知连续系统二阶微分方程的零输入响应 .w64974416222s .brush0 { fill: rgb(255,255,255); } .w64974416222s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416222s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416222s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416222s .font2 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416222s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( t y zi 的形式为 .w64974416206s .brush0 { fill: rgb(255,255,255); } .w64974416206s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416206s .font0 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416206s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416206s .font2 { font-size: 262px; font-family: "Times New Roman", serif; } .w64974416206s .font3 { font-size: 242px; font-family: Symbol, serif; } .w64974416206s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416206s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } t t Be Ae 2 - - + ，则其2个特征根为（ ）
选项：
A:1，2
B:-1，-2
C:-1，2
D:1，-2
答案: 【-1，-2】
2、单选题：
以线性常系数微分方程 .w64974416192s .brush0 { fill: rgb(255,255,255); } .w64974416192s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416192s .pen1 { stroke: rgb(0,0,0); stroke-width: 28; stroke-linejoin: round; } .w64974416192s .font0 { font-size: 361px; font-family: "Times New Roman", serif; } .w64974416192s .font1 { font-size: 580px; font-family: "Times New Roman", serif; } .w64974416192s .font2 { font-style: italic; font-size: 361px; font-family: "Times New Roman", serif; } .w64974416192s .font3 { font-style: italic; font-size: 580px; font-family: "Times New Roman", serif; } .w64974416192s .font4 { font-size: 332px; font-family: Symbol, serif; } .w64974416192s .font5 { font-size: 530px; font-family: Symbol, serif; } .w64974416192s .font6 { font-size: 765px; font-family: Symbol, serif; } .w64974416192s .font7 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 00 ()() kk NM kk kk kk dytdxt ab dtdt == = åå 表示的LT I系统，其单位冲激响应h(t)中不包括
及其导数项的条件为（ ）
选项：
A:N=0
B:M<N
C:M>N
D:M=N
答案: 【M<N】
3、单选题：
已知连续系统微分方程为 .w64974416165s .brush0 { fill: rgb(255,255,255); } .w64974416165s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416165s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416165s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416165s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416165s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416165s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416165s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2 2 ()2()()() dd rtrtrtet dtdt ++= ,其齐次解的一般形式为：（ ）
选项：
A:.w64974416130s .brush0 { fill: rgb(255,255,255); } .w64974416130s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416130s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416130s .font1 { font-style: italic; font-size: 260px; font-family: "Times New Roman", serif; } .w64974416130s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416130s .font3 { font-size: 241px; font-family: Symbol, serif; } .w64974416130s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1 t Ae -
B:.w64974416142s .brush0 { fill: rgb(255,255,255); } .w64974416142s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416142s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416142s .font1 { font-style: italic; font-size: 260px; font-family: "Times New Roman", serif; } .w64974416142s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416142s .font3 { font-size: 241px; font-family: Symbol, serif; } .w64974416142s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416142s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 12 tt AeAte -- +
C:.w64974416152s .brush0 { fill: rgb(255,255,255); } .w64974416152s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416152s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416152s .font1 { font-style: italic; font-size: 260px; font-family: "Times New Roman", serif; } .w64974416152s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416152s .font3 { font-size: 241px; font-family: Symbol, serif; } .w64974416152s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416152s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2 12 tt AeAe -- +
D:.w64974416164s .brush0 { fill: rgb(255,255,255); } .w64974416164s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416164s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416164s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416164s .font2 { font-style: italic; font-size: 260px; font-family: "Times New Roman", serif; } .w64974416164s .font3 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416164s .font4 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416164s .font5 { font-size: 241px; font-family: Symbol, serif; } .w64974416164s .font6 { font-size: 373px; font-family: Symbol, serif; } .w64974416164s .font7 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2 123 +() tt AeAeAt d -- +
答案: 【.w64974416142s .brush0 { fill: rgb(255,255,255); } .w64974416142s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416142s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416142s .font1 { font-style: italic; font-size: 260px; font-family: "Times New Roman", serif; } .w64974416142s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416142s .font3 { font-size: 241px; font-family: Symbol, serif; } .w64974416142s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416142s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 12 tt AeAte -- +】
4、单选题：
描述某系统的微分方程为 .w64974416151s .brush0 { fill: rgb(255,255,255); } .w64974416151s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416151s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416151s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416151s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416151s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } "()3'()2()3'()4() ytytytftft ++=+ ，已知 .w64974416141s .brush0 { fill: rgb(255,255,255); } .w64974416141s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416141s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416141s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416141s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416141s .font3 { font-size: 241px; font-family: Symbol, serif; } .w64974416141s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416141s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } (0)1,'(0)2,()() yyftt e -- === ，则初始值 .w64974416129s .brush0 { fill: rgb(255,255,255); } .w64974416129s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416129s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416129s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416129s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416129s .font3 { font-size: 241px; font-family: Symbol, serif; } .w64974416129s .font4 { font-size: 374px; font-family: 宋体; } .w64974416129s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } + (0)'(0) yy + 和 分别是（ ）
选项：
A:.w64974416106s .brush0 { fill: rgb(255,255,255); } .w64974416106s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416106s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416106s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416106s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416106s .font3 { font-size: 241px; font-family: Symbol, serif; } .w64974416106s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416106s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } + (0)1,'(0)5 yy + =-=
B:.w64974416082s .brush0 { fill: rgb(255,255,255); } .w64974416082s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416082s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416082s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416082s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416082s .font3 { font-size: 241px; font-family: Symbol, serif; } .w64974416082s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416082s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } + (0)1,'(0)5 yy + ==
C:.w64974416093s .brush0 { fill: rgb(255,255,255); } .w64974416093s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416093s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416093s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416093s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416093s .font3 { font-size: 241px; font-family: Symbol, serif; } .w64974416093s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416093s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } + (0)5,'(0)1 yy + ==
D:.w64974416118s .brush0 { fill: rgb(255,255,255); } .w64974416118s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416118s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416118s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416118s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416118s .font3 { font-size: 241px; font-family: Symbol, serif; } .w64974416118s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416118s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } + (0)1,'(0)5 yy + ==-
答案: 【.w64974416082s .brush0 { fill: rgb(255,255,255); } .w64974416082s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416082s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416082s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416082s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416082s .font3 { font-size: 241px; font-family: Symbol, serif; } .w64974416082s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416082s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } + (0)1,'(0)5 yy + ==】
5、单选题：
下面说法不正确的是（ ）
选项：
A:特解的函数形式与激励的函数形式有关
B:LTI系统输出中的强迫响应是微分方程的特解，仅由激励决定
C:LTI系统输出中的自由响应的形式由特征根和激励共同决定
D:微分方程的齐次解是指对应齐次微分方程的解，函数形式由特征根来决定
答案: 【LTI系统输出中的自由响应的形式由特征根和激励共同决定】
6、单选题：
已知微分方程 .w64974416072s .brush0 { fill: rgb(255,255,255); } .w64974416072s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416072s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416072s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416072s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416072s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416072s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()2()() d rtrtet dt += 描述的连续系统的单位冲激响应为 .w64974416359s .brush0 { fill: rgb(255,255,255); } .w64974416359s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416359s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416359s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416359s .font2 { font-style: italic; font-size: 260px; font-family: "Times New Roman", serif; } .w64974416359s .font3 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416359s .font4 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416359s .font5 { font-size: 241px; font-family: Symbol, serif; } .w64974416359s .font6 { font-size: 373px; font-family: Symbol, serif; } .w64974416359s .font7 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2 1 ()() t htet e - = ，则有关系统 .w64974416091s .brush0 { fill: rgb(255,255,255); } .w64974416091s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416091s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416091s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416091s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416091s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416091s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } () ()2() ddet rtrt dtdt += 的单位冲激响应 .w64974416080s .brush0 { fill: rgb(255,255,255); } .w64974416080s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416080s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416080s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416080s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416080s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2 () ht 描述不正确的是（ ）
选项：
A:.w64974416357s .brush0 { fill: rgb(255,255,255); } .w64974416357s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416357s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416357s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416357s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416357s .font3 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416357s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416357s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 21 ()()() hthtt e =*
B:.w64974416348s .brush0 { fill: rgb(255,255,255); } .w64974416348s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416348s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416348s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416348s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416348s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416348s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416348s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 21 ()() d htht dt =
C:.w64974416368s .brush0 { fill: rgb(255,255,255); } .w64974416368s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416368s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416368s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416368s .font2 { font-style: italic; font-size: 260px; font-family: "Times New Roman", serif; } .w64974416368s .font3 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416368s .font4 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416368s .font5 { font-size: 241px; font-family: Symbol, serif; } .w64974416368s .font6 { font-size: 373px; font-family: Symbol, serif; } .w64974416368s .font7 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2 2 ()()2() t httet de - =-
D:.w64974416336s .brush0 { fill: rgb(255,255,255); } .w64974416336s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416336s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416336s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416336s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416336s .font3 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416336s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416336s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 21 ()()'() hthtt d =*
答案: 【.w64974416357s .brush0 { fill: rgb(255,255,255); } .w64974416357s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416357s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w64974416357s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416357s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416357s .font3 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416357s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416357s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 21 ()()() hthtt e =*】
7、单选题：
当输入为 .w64974416324s .brush0 { fill: rgb(255,255,255); } .w64974416324s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416324s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416324s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416324s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( t x 时，某LTI系统的零状态响应为 .w64974416311s .brush0 { fill: rgb(255,255,255); } .w64974416311s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416311s .font0 { font-size: 530px; font-family: Symbol, serif; } .w64974416311s .font1 { font-size: 242px; font-family: Symbol, serif; } .w64974416311s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416311s .font3 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416311s .font4 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416311s .font5 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416311s .font6 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416311s .font7 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ò ¥ - - = t d x t y t t ) 2 ( ) ( ，则该系统的单位冲激响应是（ ）。
选项：
A:.w64974416299s .brush0 { fill: rgb(255,255,255); } .w64974416299s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416299s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416299s .font1 { font-size: 373px; font-family: Symbol, serif; } .w64974416299s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416299s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) 2 ( - t x
B:.w64974416323s .brush0 { fill: rgb(255,255,255); } .w64974416323s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416323s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416323s .font1 { font-size: 373px; font-family: Symbol, serif; } .w64974416323s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416323s .font3 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416323s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) 2 ( - t d
C:.w64974416287s .brush0 { fill: rgb(255,255,255); } .w64974416287s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416287s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416287s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416287s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416287s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416287s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } (2) t e -
D:.w64974416310s .brush0 { fill: rgb(255,255,255); } .w64974416310s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416310s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416310s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416310s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416310s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416310s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } (2) t e +
答案: 【.w64974416287s .brush0 { fill: rgb(255,255,255); } .w64974416287s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416287s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416287s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416287s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416287s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416287s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } (2) t e -】
8、单选题：
.w64974416298s .brush0 { fill: rgb(255,255,255); } .w64974416298s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416298s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416298s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416298s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416298s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416298s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416298s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()(1cos()) 2 tt p d -*- 等于（ ）
选项：
A:.w64974416286s .brush0 { fill: rgb(255,255,255); } .w64974416286s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416286s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416286s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416286s .font1 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416286s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416286s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1cos() 2 p -
B:.w64974416263s .brush0 { fill: rgb(255,255,255); } .w64974416263s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416263s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416263s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416263s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416263s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416263s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416263s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1cos() 2 t p --
C:.w64974416275s .brush0 { fill: rgb(255,255,255); } .w64974416275s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416275s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416275s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416275s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416275s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416275s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416275s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } () 2 t p d -
D:0
答案: 【.w64974416263s .brush0 { fill: rgb(255,255,255); } .w64974416263s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416263s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64974416263s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416263s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416263s .font2 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416263s .font3 { font-size: 373px; font-family: Symbol, serif; } .w64974416263s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1cos() 2 t p --】
9、多选题：
已知某电路中以电容电压 .w64974416249s .brush0 { fill: rgb(255,255,255); } .w64974416249s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416249s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416249s .font1 { font-style: italic; font-size: 260px; font-family: "Times New Roman", serif; } .w64974416249s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416249s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } () C ut 为输出的电路的阶跃响应 .w64974416235s .brush0 { fill: rgb(255,255,255); } .w64974416235s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416235s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416235s .font1 { font-size: 262px; font-family: "Times New Roman", serif; } .w64974416235s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416235s .font3 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416235s .font4 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416235s .font5 { font-size: 373px; font-family: Symbol, serif; } .w64974416235s .font6 { font-size: 242px; font-family: Symbol, serif; } .w64974416235s .font7 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( ) 1 2 ( ) ( 2 t e e t g t t e + + - = - - ，冲击响应为 .w64974416221s .brush0 { fill: rgb(255,255,255); } .w64974416221s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416221s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416221s .font1 { font-size: 262px; font-family: "Times New Roman", serif; } .w64974416221s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416221s .font3 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416221s .font4 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416221s .font5 { font-size: 242px; font-family: Symbol, serif; } .w64974416221s .font6 { font-size: 373px; font-family: Symbol, serif; } .w64974416221s .font7 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( ) ( 2 ) ( 2 t e e t h t t e - - - = ，则当 .w64974416205s .brush0 { fill: rgb(255,255,255); } .w64974416205s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416205s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416205s .font1 { font-style: italic; font-size: 260px; font-family: "Times New Roman", serif; } .w64974416205s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416205s .font3 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416205s .font4 { font-size: 373px; font-family: Symbol, serif; } .w64974416205s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()2()3() S uttt ed =+ 时，以 .w64974416247s .brush0 { fill: rgb(255,255,255); } .w64974416247s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416247s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416247s .font1 { font-style: italic; font-size: 260px; font-family: "Times New Roman", serif; } .w64974416247s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416247s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } () C ut 为输出的电路的零状态响应 .w64974416233s .brush0 { fill: rgb(255,255,255); } .w64974416233s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416233s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416233s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416233s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( t y 为（ ）。
选项：
A:.w64974416190s .brush0 { fill: rgb(255,255,255); } .w64974416190s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416190s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416190s .font1 { font-size: 262px; font-family: "Times New Roman", serif; } .w64974416190s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416190s .font3 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416190s .font4 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416190s .font5 { font-size: 373px; font-family: Symbol, serif; } .w64974416190s .font6 { font-size: 242px; font-family: Symbol, serif; } .w64974416190s .font7 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( ) 2 4 2 ( 2 t e e t t e + - - -
B:.w64974416219s .brush0 { fill: rgb(255,255,255); } .w64974416219s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416219s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416219s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416219s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416219s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( 3 ) ( 2 t h t g +
C:.w64974416203s .brush0 { fill: rgb(255,255,255); } .w64974416203s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416203s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416203s .font1 { font-size: 262px; font-family: "Times New Roman", serif; } .w64974416203s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416203s .font3 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416203s .font4 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416203s .font5 { font-size: 373px; font-family: Symbol, serif; } .w64974416203s .font6 { font-size: 242px; font-family: Symbol, serif; } .w64974416203s .font7 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( ) 1 2 ( 2 t e e t t e + - - -
D:.w64974416177s .brush0 { fill: rgb(255,255,255); } .w64974416177s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416177s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416177s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416177s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416177s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( ) ( 2 t h t g +
答案: 【.w64974416190s .brush0 { fill: rgb(255,255,255); } .w64974416190s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416190s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416190s .font1 { font-size: 262px; font-family: "Times New Roman", serif; } .w64974416190s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416190s .font3 { font-style: italic; font-size: 262px; font-family: "Times New Roman", serif; } .w64974416190s .font4 { font-style: italic; font-size: 373px; font-family: Symbol, serif; } .w64974416190s .font5 { font-size: 373px; font-family: Symbol, serif; } .w64974416190s .font6 { font-size: 242px; font-family: Symbol, serif; } .w64974416190s .font7 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( ) 2 4 2 ( 2 t e e t t e + - - - ;
.w64974416219s .brush0 { fill: rgb(255,255,255); } .w64974416219s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64974416219s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64974416219s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w64974416219s .font2 { font-size: 373px; font-family: Symbol, serif; } .w64974416219s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) ( 3 ) ( 2 t h t g +】
10、判断题：
单位冲激响应h(t)是输入为
通过线性时不变系统的零状态响应。（ ）
选项：
A:错
B:对
答案: 【对】
11、判断题：
两个一样的矩形信号进行卷积积分，结果一定是一个三角形。（ ）
选项：
A:对
B:错
答案: 【对】
12、单选题：
已知某系统输入为x(t)，输出为y(t)，整个系统的单位冲激响应用h(t)表示，则下列关系错误的是（ ）
选项：
A:y(t)=x(t)*( h1(t)+ h2(t))
B:h(t)= h1(t)*h2(t)
C:y(t)=x(t)*h(t)
D:h(t)= h1(t)+ h2(t)
答案: 【h(t)= h1(t)*h2(t)】
13、判断题：
两有始信号卷积产生新的信号的起始点是这两信号的起点之和。（ ）
选项：
A:错
B:对
答案: 【对】
14、单选题：
系统结构框图如图示，该系统的单位冲激响应h(t)满足的方程式为（ ）
选项：
A:
B:
C:
D:
答案: 【】
15、单选题：
信号f1(t)，f2(t)的波形如下图所示，设f(t)=f1(t)*f2(t)，则f(0)为（ ）
选项：
A:2
B:4
C:1
D:3
答案: 【2】