問題詳情
53. 鋸片或鋸條都有鋸路，此鋸路之作用為
(A)增加摩擦
(B)減少撕裂木材
(C)利於鋸屑之排出
(D)保護木材。
(A)增加摩擦
(B)減少撕裂木材
(C)利於鋸屑之排出
(D)保護木材。
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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