A.much
B.more
C.most
D.less
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A.lower than；can lubricate
B.lower than；can cool
C.higher than；can enter
D.higher than ；cannot enter
A.the cylinder cover
B.the piston rings
C.the piston crown
D.the piston skirt
A.whatever
B.whenever
C.wherever
D.whoever
A.scavenging
B.starting
C.cooling
D.blowing
A.make use of
B.have made the use of
C.by means of
D.make advantage of
最新試題
An automated diesel engine should normally shut down due to （）
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The minimum speed an engine must attain before ignition can occur depends upon （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
Maximum horsepower of a diesel engine is attained （）.
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
The function of diesel engine piston compression rings is to （）.
White smoke exhausting from an operating diesel engine may indicate （）.
Combustion knock occurring in a diesel engine can be caused by （）.