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31. 如左圖所示之符號為 (A)限時動作接點 (B)殘留接點 (C)手捺開關接點 (D)自動復歸接點 。
問題詳情
31.
如左圖所示之符號為
(A)限時動作接點
(B)殘留接點
(C)手捺開關接點
(D)自動復歸接點 。
參考答案
答案:B
難度:
計算中
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