MOOC 专业英语(哈尔滨学院)1452324184 最新慕课完整章节测试答案
1. Analog and Digital Signal
文章目录
作业
1、单选题:
Which is the analog signal?
选项:
A:
B:
C:
D:
答案: 【
】
课后作业
1、单选题:
Which is the digita signal?
选项:
A:
B:
C:
D:
答案: 【 】
11 Bluetooth
课后练习
1、判断题:
Bluetooth technology is free for all the people
选项:
A: 正确
B: 错误
答案: 【 正确】
12 Wireless LAN
三单元测验
1、单选题:
Modulation is the process of shifting spectrum of one center ( ) to another.
选项:
A: amplitude
B: frequency
C: phase
D:
答案: 【 frequency】
2、单选题:
Which one is ground-wave propagation? ( )
选项:
A:
B:
C:
D:
答案: 【 】
3、单选题:
Which propagation mode has the longest transmission distance? ( )
选项:
A: Sky-wave propagation
B: Line-of-sight propagation
C: Ground-wave propagation
D:
答案: 【 Sky-wave propagation】
4、单选题:
The first image sensor was invented in( )
选项:
A: Bell Lab
B: Kodak company
C:
D:
答案: 【 Bell Lab】
5、单选题:
Which is not the characteristics of CMOS( )
选项:
A: strong anti-noise ability
B: highly integrated
C: increasing the rate of final products
D:
答案: 【 highly integrated】
6、单选题:
Bluetooth technology makes the office in an ( ) status.
选项:
A: confused
B: constant
C: efficient
D:
答案: 【 efficient】
7、单选题:
What is the data rate of bluetooth technology? ( )
选项:
A: 10 Gb/s
B: 1 Gb/s
C: 10 Mb/s
D: 1 Mb/s
答案: 【 1 Mb/s】
8、单选题:
Which application of bluetooth technology as shown