問題詳情
57. 橫斷用手鋸的齒喉角,角度約為幾度?
(A)5°
(B)7°
(C)20°
(D)40°。
(A)5°
(B)7°
(C)20°
(D)40°。
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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