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ut30b万用表怎么使用
方法如下(1)旋转波段开关,至交流电压500V档(V~500)&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp(2)黑表笔插入“COM”插孔,红表笔插入“VΩmA”插孔&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp(3)手持表...
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