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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Diesel engine control can be obtained by the bridge （）.
In using reduction gears to obtain efficient propeller speeds, （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
Routine monitoring of a diesel engine should include （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
An automated diesel engine should normally shut down due to （）
To determine if the lube oil filter elements need changing, （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.