問題詳情
55. 鉋刀之切削原理中，切削的關係角度含前滑角、刃角及切削角，三者之和為
(A)60°
(B)70°
(C)80°
(D)90°。
(A)60°
(B)70°
(C)80°
(D)90°。
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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