問題詳情
30.在 CNS 規範中，三角皮帶之夾角為：
(A) 30°
(B) 40°
(C) 36°
(D) 34°
(A) 30°
(B) 40°
(C) 36°
(D) 34°
參考答案
答案：B
難度：適中0.624521
統計：A(67),B(163),C(26),D(5),E(0)
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