問題詳情
7 0 . 3 E 電驛在下列何種情況會動作？
(A) 過載、欠相、接地
(B) 過載、逆向、欠相
(C) 接地、過載、短路
(D) 過載、短路、欠相。
(A) 過載、欠相、接地
(B) 過載、逆向、欠相
(C) 接地、過載、短路
(D) 過載、短路、欠相。
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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