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一个元件的电压电流为关联参考方向,若电流I=-3A,元件产生的功率是12w,则电压=( )V。
单选题
2019-04-20 14:54:22
0
403
A.-4
B.-1/4
C.4
D.36
参考答案:……
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参考答案
科目:
电路(含实验)
学科:
电气工程
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