A.at TDC
B.before TDC
C.after TDC
D.during air starting
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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
A.two crankshaft revolutions in a two-stroke/cycle engine
B.two power strokes in a two-stroke/cycle engine
C.one power stroke in a two-stroke/cycle engine
D.two piston strokes in a two-stroke/cycle engine
A.at each control station
B.in the chief engineer’s quarters
C.in the captains quarters
D.All of the above are correct
A.a cracked liner
B.burning lube oil
C.an overloaded engine
D.insufficient combustion air
A.increasing the volume of intake air
B.shutting off the fuel supply
C.increasing the engine back pressure
D.over-speeding the engine
A.During operation at low speed
B.During operation at rated speed, but low power output
C.During acceleration
D.All of the above
A.compression pressures are below normal
B.lube oil is diluted with fuel oil
C.cranking speed is too low
D.exhaust system is partially restricted
最新试题
Diesel engine control can be obtained by the bridge （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
Proper filtering and straining of fuel oil is important because the （）.
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 （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
Routine monitoring of a diesel engine should include （）.