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53. 螺距 3 ㎜的雙線螺紋,每旋轉一圈沿軸向前進(A)1.5 ㎜(B)3 ㎜(C)6 ㎜(D)12 ㎜。
問題詳情
53. 螺距 3 ㎜的雙線螺紋,每旋轉一圈沿軸向前進
(A)1.5 ㎜
(B)3 ㎜
(C)6 ㎜
(D)12 ㎜。
參考答案
答案:C
難度:非常簡單1
統計:A(0),B(0),C(5),D(0),E(0)
上一篇 :
35. 單式齒輪系中,惰輪之最主要功能為(A)增加轉速(B)改變迴轉方向(C)增加傳動效率(D)改變速比。
下一篇 :
【題組】13、
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