单项选择题
A centrifuge will satisfactorily remove which of the following contaminants from fuel oil?（）
A.Gasoline
B.Water
C.Lubricating oil
D.sulphur compounds
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相关考题
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单项选择题
Diesel engine ‘blow-by’ into the crankcase is caused by excessive ring（）
A.back clearance
B.side clearance
C.gap clearance
D.taper clearance -
单项选择题
Heavy residual fuel oils are heated prior to centrifuging to （）
A.reduce fuel weight
B.increase specific gravity
C.separate fuel from lube oil
D.reduce fuel viscosity -
单项选择题
In a diesel engine, blow-by is generally the result of worn（）
A.valve guides
B.oil control rings
C.valve seats
D.compression rings
