問題詳情
29.將交變的感應電流轉變為直流電時，必須經過換向手續，此種作用稱為：
(A)切割磁力線
(B)整流
(C)補償
(D)電樞反應
(A)切割磁力線
(B)整流
(C)補償
(D)電樞反應
參考答案
答案：B
難度：簡單0.876543
統計：A(4),B(71),C(3),D(3),E(0)
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