A.not less than twice
B.greater at least twice than
C.not greater twice than
D.larger three times than
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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
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The main purpose of the piston oil scraper rings is to （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
To determine if the lube oil filter elements need changing, （）.
What is the function of the thrust bearing?（）
White smoke exhausting from an operating diesel engine may indicate （）.
When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（）
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 （）.
An automated diesel engine should normally shut down due to （）
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.