摘要:A.闭合S1.调节R1到电流表满偏.闭合S2.调节R2到电流表半偏.读出R2的阻值 B.闭合S1.调节R1到电流表满偏.闭合S2.调节R1到电流袁半偏.读出R2的阻值 C.闭合S1.S2.调节R1到电流表满偏.调节R2到电流表半偏.读出R2的阻值 D.闭合S1.S2.调节R2到电流表满偏.调节R1到电流表半偏.读出R2的阻值

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