A.the beveled edges of the intake valves provide for serf-centering during seating
B.intake valves utilize stellite-coated valve seat inserts which reduce wear
C.the volume of air passing through intake valves is less than the volume of air passing through exhaust valves
D.intake valves are less affected to the corrosive action of exhaust gases
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A.Drain the accumulated moisture
B.Test the relief valves
C.Watch the temperature to prevent fluctuations in pressure
D.Clean the interior to remove oil and foreign matter
A.worn main bearing journals
B.torsional stress deformation
C.slack thrust bearings
D.bearing shells shim dimensions
A.contaminated with sludge
B.contaminated with carbon
C.diluted with fuel oil
D.diluted with water
A.the solid impurities of large particle
B.the solid impurities of fine particle
C.the water content
D.both water and solid impurities
A.brought about
B.caused for
C.resulted from
D.led
最新試題
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
To determine if the lube oil filter elements need changing, （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
White smoke exhausting from an operating diesel engine may indicate （）.
The main purpose of the piston oil scraper rings is to （）.
An automated diesel engine should normally shut down due to （）
A diesel engine piston ring face is in direct contact with the （）.
Lube oil cannot be efficiently filtered if its （）.
What is the function of the thrust bearing?（）
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.