A.A variable pitch propeller
B.A variable pitch nut
C.A fixed pitch parallel
D.A fixed pitch screw
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A.The piston rod
B.The cross head pin
C.The gudgeon pin
D.The crank-pin
A.A filter
B.A centrifuge
C.A distiller
D.A generator
A.Water energy
B.Electrical energy
C.Chemical energy
D.Heat energy
A.Constant inspection
B.Keeping constant load
C.Remaining constant temperature
D.varying speed
A.The crankshaft
B.The crankcase
C.The guide-ways
D.The frames
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If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
Proper filtering and straining of fuel oil is important because the （）.
Maximum horsepower of a diesel engine is attained （）.
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The minimum speed an engine must attain before ignition can occur depends upon （）.
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If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
In a simple mechanical governor, the （）.
The function of diesel engine piston compression rings is to （）.