单项选择题
On board supply vessels, a centrifuge is normally used to purify（）
A.cooling water
B.fuel oil
C.sea water
D.diesel intake air
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相关考题
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单项选择题
Water accumulating in the crankcase of a diesel engine could indicate（）
A.a cracked cylinder liner
B.excessive water in the fuel
C.a leaking intercooler
D.excessive moisture in the scavenge air -
单项选择题
The device used to store a charged pressure for a hydraulic starting system is called the（）
A.reservoir
B.hand pump
C.accelerator
D.accumulator -
单项选择题
How dose water enter the crankcase of a diesel engine?（）
A.Through the crankcase exhauster
B.As water vapor contained in blow-by
C.Demulsifying lube oil passing through the main bearings
D.Condensation from vapor formed in the expansion tank
