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【单选题】
由电阻R=8Ω和感抗X.=6Ω串联后,接到220V的交流电源上,这时的电流为 ,功率因数cos φ等于 。A.
15.7A/0.8
B.
22A/0.8
C.
15.7A/0.6
D.
22A/0.6
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A.
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