A.Between；more commonly
B.Among；the most commonly
C.Between；not more commonly
D.Among；not the most commonly
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A.Except for
B.Beside
C.Except
D.In addition to
A.An air pump
B.A compressor
C.A fuel pump
D.A priming
A.The detergency；the alkalinity
B.The alkalinity；the detergency
C.The inhabitant；the water
D.The additives；the distilled water
A.An air receiver
B.An operating valve
C.An automatic valve
D.An air distributor
A.A variable pitch propeller
B.A variable pitch nut
C.A fixed pitch parallel
D.A fixed pitch screw
最新試題
The minimum speed an engine must attain before ignition can occur depends upon （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
An automated diesel engine should normally shut down due to （）
Proper filtering and straining of fuel oil is important because the （）.
A diesel engine piston ring face is in direct contact with the （）.
To determine if the lube oil filter elements need changing, （）.
Routine monitoring of a diesel engine should include （）.
Maximum horsepower of a diesel engine is attained （）.