A.One
B.Two
C.Four
D.Eight
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A.at TDC
B.before TDC
C.after TDC
D.during air starting
A.Spark plug
B.Heat of compression
C.Carburetor
D.Glow ping
A.seal the space between the piston and the liner
B.reduce the amount of lube oil burned in the combustion chamber
C.transmit heat from the piston to the cylinder liner
D.damp out fluctuations of the piston side thrust
A.when the engine RPM is pulled down by overload
B.at rated engine RPM
C.at 95 % of rated engine RPM
D.at 95 % of a properly adjusted governor RPM with the engine under full load
A.temperature
B.pressure
C.engine speed
D.all of the above
最新試題
The main purpose of the piston oil scraper rings is to （）.
Lube oil cannot be efficiently filtered if its （）.
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 （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
White smoke exhausting from an operating diesel engine may indicate （）.
Combustion knock occurring in a diesel engine can be caused by （）.
What is the function of the thrust bearing?（）
An automated diesel engine should normally shut down due to （）