單項選擇題

A.excessive piston to liner clearance
B.excessive dirt beneath the piston crown that reduces heat transfer
C.faulty nozzle spray
D.all of the above

你可能感興趣的試題

A.an increased flash point
B.higher lube oil pressures
C.an increased viscosity
D.lower lube oil pressures

A.The fuel metering will vary
B.The fuel will explode
C.The cylinder head will crack
D.The engine will stop

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