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红线是火线还是零线_家居日记
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红线是火线还是零线

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红线是火线还是零线 红线是属于火线，是用字母“L”进行标示的。火线在整个电路中是作为运输电流的电源线，是带有电的，在接线前，务必保证电源是切断的，防止触电的危险


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