MOOC 专业英语（选修）(北京信息职业技术学院)1450586162 最新慕课完整章节测试答案
Alloy steel
文章目录
单元测试
1、填空题：
With ______ to application, all dies fall into cutting and shaping dies.
答案: 【 respect】
2、填空题：
Classification according to applications
covers the number of operations that can _______ performed by means of one die
答案: 【 be】
3、填空题：
the work is _____ upwards and then removed by a positive knockout
答案: 【 ejected】
4、填空题：
The die design should suit the scale of
production it will ____ used for......
答案: 【 be】
5、填空题：
the working parts of the die must ____ adequately strong, durable in operation, and easily replaceable when worn out
答案: 【 be】
6、填空题：
Alloy steels may be ______ as steels with alloying elements that exceed one or more of the following limits
答案: 【 defined】
7、填空题：
and
containing _________ of the following elements
答案: 【 one or more】
8、填空题：
The
nominal chemical composition of the standard AISI alloy steels ______ given.
答案: 【 were】
9、填空题：
alloy
steels may be classified ______ through-hardenableand surface-hardenable
答案: 【 as】
10、填空题：
One
reason for the widespread use of the alloy steels in the lower carbon range,
such as 4024 and 4028, is ______ good machinability _______obtained.
答案: 【 that
is】
Basic of Industrial Robots
阶段测试
1、填空题：
An open-loop circuit or system is
one in which feedback_______not employed
答案: 【 is】
2、填空题：
The performance characteristics
of the circuit are determined by the characteristics of the individual
components ______ and their interaction in the circuit.
答案: 【 used】
3、填空题：
The purpose of _________ is to regulate the energy transfer rate by regulating the flow rate in a circuit or branch of a circuit.
答案: 【 flow control】
4、填空题：
Method by ________ Open-Loop Circuits
Achieve Control
答案: 【 which】
5、填空题：
Pump control implies one of two control methods,depending on which type of pump is _____________.
答案: 【 used】
Lathes
阶段测试
1、填空题：
rigid frame _______ which all the other basic components are mounted
答案: 【 on】
2、填空题：