問題詳情

13. Scavenging air enters the cylinders of the diesel engine, via air flaps, through thescavenging ports when the pistons are nearly at their ____________ position.
(A) Top dead center (TDC)
(B) bottom dead center (BDC)
(C) mid-way stroke
(D) ignition time

參考答案

答案:B
難度:非常簡單1
統計:A(0),B(2),C(0),D(0),E(0)

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