连续移动数控机床增量倍率旋钮必须选择为OFF状态。

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问题判断题

答案

参考答案：对

补全对话，情景问答

( ) 1. A: What do you have on Thursday? 　　　B: We have P. E. class.	A.
( ) 2. A: What do we have on Fridays? 　　　B: Let me see. We have math class.	B.
( ) 3. A: What do you have on Tuesdays? 　　　B: We have English class.	C.

单项选择题

断路器交接试验，断路器均压电容器的极间绝缘电阻不应低于（）MΩ。

A.1000

B.3000

C.5000

D.10000