单项选择题
A.water in the fuel
B.cold lube oil
C.excessive starting air pressure
D.excessive fuel pressure
单项选择题 If it becomes necessary to cutout an individual cylinder of a large, low-speed, main propulsion diesel engine, the fuel to that cylinder should be secured and its （）
单项选择题 The satisfactory operation of diesel engine exhaust valves usually depends on（）
单项选择题 If an auxiliary diesel engine frequently stalls, the trouble may be caused by （）