单项选择题
What is the term given to the process of breaking up fuel oil into very fine particles for better combustion?（）
A.Settling
B.Straining
C.Spraying
D.Atomizing
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In a diesel engine, an extremely leaking exhaust valve can cause （）.
A.misfiring
B.pre-ignition
C.interrupted scavenging
D.reduced scavenging -
单项选择题
Diesel engine exhaust temperatures may be used to indicate （）.
A.leaking exhaust valves
B.an overloaded cylinder
C.a clogged injector nozzle
D.all of the above -
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In a bypass type lubrication system for a diesel engine, the dirty oil line to the centrifuge should be taken from the （）.
A.lube oil pump suction line
B.lube oil pump discharge line
C.bottom of the lube oil sump
D.outlet from the lube oil header
