试题与答案

距离保护第一段动作时间是()A、绝对零秒 B、保护装置与断路器固有的动作时间 C、可以按

题型:单项选择题

题目:

距离保护第一段动作时间是()

A、绝对零秒

B、保护装置与断路器固有的动作时间

C、可以按需要而调整

D、0.1s

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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