单项选择题
A.the proper back pressure
B.the cooling water temperature
C.correct timing and proper seating
D.accurate metering and the exhaust temperature
单项选择题 If an auxiliary diesel engine frequently stalls, the trouble may be caused by （）
单项选择题 A diesel engine cranks properly during starting but immediately stallsWhich of the following systems is most likely at fault?（）
单项选择题 The exhaust gases in a supercharged two-stroke/cycle diesel engine are expelled from the cylinder by （）