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左零右火

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  • 左零右火下一句是什么呢??

    张旭 2021-07-08 00:10 正常情况下不会有问题,不影响电器的使用,因为交流电是没有方向的。但是用带开关功能的插排时会存在一定隐患,我拆开过公牛的插排,它上面的开关是只断火线的,如果插座是左火右零,那么[详细]

    2023-02-11 18:42 分类:问答
  • TStringList, Dynamic Array or Linked List in Delphi?

    I have a choice. I have a number of already ordered strings that I need to store and access. It looks like I can choose between using:[详细]

    2022-12-27 09:53 分类:问答