定时限过电流继电保护整定时间一般为( )。A．0.1s B．0.5s C．0.7s_爱下问搜题

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问题单项选择题

定时限过电流继电保护整定时间一般为( )。

A．0.1s

B．0.5s

C．0.7s

D．10s

答案

参考答案：B

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A. put in
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D. turn on

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