使用兆欧表测量设备绝缘前,应对设备()。
A、切断电源
B、不用验电
C、专用接地放电
D、任意搭接短路放电
参考答案:A, C
---Did the little boy manage _____ the suitcase upstairs?
---No, he didn’t. He isn’t strong enough even ______ it.
A.to carry, moving
B.carrying, to move
C.to carry, to move
D.carrying, moving
(1)消防队赶到(2)一颗炸弹爆炸(3)汽车上冒出浓烟(4)一辆汽车满载着炸弹(5)将剩余的炸弹转移到安全地带
A.(4)—(2)—(3)—(5)—(1)
B.(3)—(4)—(1)—(2)—(5)
C.(4)—(3)—(2)—(1)—(5)
D.(4)—(1)—(2)—(3)—(5)