单项选择题
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
A.Spark plug
B.Heat of compression
C.Carburetor
D.Glow ping
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相关考题
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单项选择题
The main purpose of the piston oil scraper rings is to （）.
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 -
单项选择题
Maximum horsepower of a diesel engine is attained （）.
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 -
单项选择题
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
A.temperature
B.pressure
C.engine speed
D.all of the above
