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【单选题】
若把电路中的参考点由原来电位较低的点改选为电位较高的点,则电路中各点的电位将会( )A.
改变
B.
不改变
C.
减小为0
D.
不能确定
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B.
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A.
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B.
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C.
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D.
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A.
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B.
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C.
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E.
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F.
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