問題詳情
140. 引擎轉速在 1200rpm，理想點火時間是位於活塞到上死點前 1/600 秒，求該轉速下的理想點火時是上死點前多少度
(A)6°
(B)8°
(C)10°
(D)12°。
(A)6°
(B)8°
(C)10°
(D)12°。
參考答案
答案：D
難度：非常簡單1
統計：A(0),B(0),C(0),D(4),E(0)
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