80. 防止機台螺絲與螺帽的鬆動，選用下列哪些墊圈正確？(A)菊花墊圈(B)平墊圈(C)有舌墊圈(D)彈簧墊圈。

問題詳情

80. 防止機台螺絲與螺帽的鬆動，選用下列哪些墊圈正確？
(A)菊花墊圈
(B)平墊圈
(C)有舌墊圈
(D)彈簧墊圈。

參考答案

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