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用500 V兆欧表测试电气器件的绝缘电阻不小于 MΩ

  • 2024-01-17 09:52:00
  • 2018现场信号新增理论500题修改

用500 V兆欧表测试电气器件的绝缘电阻不小于 MΩ

A.1

B.2

C.5

D.3

正确答案是C

上一篇:电气接点须清洁、压力适当、接触良好,接点片磨耗不得超过厚度的 。
下一篇:熔断器、断路器安装符合标准,安装牢固、接触良好,起到分级防护作用。容量须符合设计规定。无具体规定的情况下,其容量应为最大负荷电流

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