氧化锌避雷器的75%“1mA电压”下的泄漏电流不应大于（）μA。A.20 B.30_爱下问搜题

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问题单项选择题

氧化锌避雷器的75%“1mA电压”下的泄漏电流不应大于（）μA。

A.20

B.30

C.50

D.75

答案

参考答案：C

选择题

______ around the Water Cube, we were then taken to see the Beijing National Stadium, known as the Bird's Nest.

A. Having shown
B. To be shown
C. Having been shown
D. To show

选择题

Take your swimming suit because you __________ want to go swimming in the sea.

A．would

B．must

C．should

D．might