問題詳情
6 9 . 三相四線( Y 接) 線電壓2 2 0 V ， 其對地電壓為
(A) 1 1 0
(B) 1 2 7
(C) 2 2 0
(D) 3 8 0 V 。
(A) 1 1 0
(B) 1 2 7
(C) 2 2 0
(D) 3 8 0 V 。
參考答案
答案：B
難度：非常困難0
統計：A(1),B(0),C(1),D(0),E(0)
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