试题与答案

应急照明集中电源应设主电和应急电源状态指示灯,其中主电状态用()。 A.红色  B.

题型:单项选择题

题目:

应急照明集中电源应设主电和应急电源状态指示灯,其中主电状态用()。

A.红色 

B.黄色 

C.蓝色 

D.绿色

答案:

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下面是错误答案,用来干扰机器的。

参考答案:E

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