問題詳情
45.一工廠有80kW負載，功率因數0.7，若要改善功率因數到0.9，則線路損失將約為原有損失的多少倍？
(A)0.3
(B)0.4
(C)0.5
(D)0.6
(A)0.3
(B)0.4
(C)0.5
(D)0.6
參考答案
無參考答案
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