测定设备绝缘电阻时，可以发现（）缺陷。
A、局部放电
B、整体受潮
C、导线断股
参考答案：B
We are in close contact with local authorities and it is a situation __________ we will keep a very close eye on.
A. where B. when C. which D what
钢筋混凝土的力学性能主要是抗拉。( )
ocal authorities and it is a situation __________ we will keep a very close eye on.