单项选择题X 纠错
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
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单项选择题
A.sediment contamination
B.fuel filter clogging
C.moisture formation
D.inadequate transfer pump suction head
单项选择题
A.a cracked cylinder head
B.a leaky cylinder head gasket
C.a cracked cylinder liner
D.any of the above
单项选择题
A.Ensure proper cylinder lube oil flow
B.Open all air space drain cocks
C.Open all indicator valves
D.all of the above
单项选择题
A.allow impurities to settle out of the fuel
B.allow air to escape from the fuel
C.make fuel available for immediate use
D.all of the above
单项选择题
A.cam rollers on the camshaft
B.spring force
C.air pressure on top of the valve differential piston
D.air pressure on the bottom of the valve differential piston
单项选择题
A.vent line
B.overflow line
C.feed line
D.sounding tube
单项选择题
A.Holding the valve open for a long period
B.Increasing the starting air pressure used
C.Opening the stating air valve quickly
D.Reducing the starting air valve size
单项选择题
A.corrosion fretting
B.insufficient lubrication
C.abnormal wear
D.fatigue failure
单项选择题
A.sludge
B.water
C.micro-organism growth
D.all of the above
单项选择题
A.burned exhaust valves
B.excessive spring compression
C.spring surge
D.worn valve seats