单项选择题
A.air supply is shut off B.fuel supply is shut off C.water supply is shut off D.safety valve lifts
If the feed pump for an auxiliary boiler fails to deliv...
单项选择题If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause maybe （）.
A.high steam pressure in the boiler B.abnormally high feed water temperature C.abnormally high boiler water temperature D.steam demand exceeding feed pump capacity
Which of the following conditions can cause above norma...
单项选择题Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle turbo-charged diesel engine?（）
A.Clogged air intake falters B.Piston blow-by C.A defective after-cooler D.Faulty exhaust valves
Lubricating oil systems for diesel engine journal beari...
单项选择题Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?（）
A.Splash B.Gravity C.Pressure D.Bypass
