A.must be provided
B.may be provided
C.have provided
D.can be provided
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A.has to be cooled
B.has heated
C.has preheated
D.has to be preheated
A.inefficiency
B.oiliness
C.detergency
D.purity
A.reciprocating pump
B.gear pump
C.centrifugal pump
D.vane pump
A.the cylinder
B.the crankshaft
C.the piston
D.the cross-head
A.the exhaust valves
B.the fuel valves
C.indicator cocks
D.the fuel pumps
最新試題
An automated diesel engine should normally shut down due to （）
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
A diesel engine piston ring face is in direct contact with the （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
Combustion knock occurring in a diesel engine can be caused by （）.
A thrust bearing is used with a propulsion diesel engine to （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.