問題詳情
40. For an ordinary four-stroke diesel engine, the exhaust valve closes _________ .
(A) after TDC (Top dead center)
(B) before TDC (Top dead center)
(C) after BDC (Bottom dead center)
(D) before BDC (Bottom dead center)
參考答案
答案：A
難度：適中0.647059
統計：A(22),B(2),C(9),D(1),E(0)