什么情况下将引起快切装置闭锁单操功能?
参考答案:
1、有来自外部的保护闭锁信号,
2、厂用母线PT隔离开关在断开位置,
3、厂用母线PT发生断线,
4、装置自检异常。
—Are you going to find a job or go on with your study to get a doctor’s degree?
—I have had enough of ______ life. I want to find a job.
A.ridiculous
B.appropriate
C.straightforward
D.academic
轮系()
A.不可获得很大的传动比
B.不可作较远距离的传动
C.可合成运动,但不可分解运动
D.可实现变向、变速要求