通常在电路中接入熔断器或自动断路器，以便发生（）时，能迅速将故障电路自动切除。
A.断路
B.短路
C.漏电
D.过载
参考答案：B
---Would you like to see Pirates of the Caribbean at the cinema?
I’ve heard it’s great.
--- Yes, I’d like to. But I _____ it twice.
A have seen B saw C will see D am going to see
数控机床的组成有哪些？
