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有电压没电流怎么回事_家居日记
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有电压没电流怎么回事

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有电压没电流怎么回事 有电压没电流说明出现了短路的问题，短路是由于电流过大造成的，短路时电路里的电阻很小，有了电阻和电流就说明有电压。此外，短路就是说电力设备正


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