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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An automated diesel engine should normally shut down due to （）
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Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
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The main purpose of the piston oil scraper rings is to （）.
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
A thrust bearing is used with a propulsion diesel engine to （）.