問題詳情
32.For an ordinary four-stroke diesel engine, the intake valve is opened .
(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：B
難度：簡單0.72973
統計：A(5),B(27),C(5),D(0),E(0)