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测量电池电压时,用数字万用表的红色表笔接电池正极,黑色表笔接电池负极,则测量的电压值是( )。
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发布时间: 2023-11-19 15:36
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测量电池电压时,用数字万用表的红色表笔接电池正极,黑色表笔接电池负极,则测量的电压值是( )。
A.A、正值
B.B、负值
C.C、不能确定
D.D、无穷大
正确答案是A
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