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用万用表怎么测电流_家居日记
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用万用表怎么测电流

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用万用表怎么测电流 1、首先要先确认电流是直流电还是交流电，再选择合适的档位，由大到小测试。2、把黑色的表笔直接插入COM洞中，再把红色的表笔插入合适的档位洞中


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