A.not less than twice
B.greater at least twice than
C.not greater twice than
D.larger three times than
您可能感興趣的試卷
你可能感興趣的試題
A.not be changed
B.be changed
C.should not be changed
D.should be changed
A.water discharges from the indicator cocks
B.no water is leaking into crankcase
C.no water in the scavenge belt
D.the rpm is lower than the speed of Dead Slow Ahead
A.viscosity
B.pressure
C.resistance
D.setting point
A.it is dirty
B.it is leaky
C.it has been renewed
D.all the above
A.specific volume
B.density
C.viscosity
D.calorific value
最新試題
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
Lube oil cannot be efficiently filtered if its （）.
In a simple mechanical governor, the （）.
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 （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
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 （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）