問題詳情
801.三線的蝸桿與50齒之蝸輪傳動，若蝸輪之周節為15mm，則蝸桿之導程為
(A)5mm
(B)15mm
(C)30mm
(D)45mm。
(A)5mm
(B)15mm
(C)30mm
(D)45mm。
參考答案
答案：D
難度：適中0.547619
統計：A(15),B(25),C(11),D(92),E(0)
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