A.twice the crankshaft speed
B.half the crankshaft speed
C.the same speed as that of the crankshaft
D.a speed independent of that of the crankshaft
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A.failing to reach rated speed
B.knocking under maximum load
C.hunting or surging under light load
D.overspeeding and running away
A.cooling water pump
B.nozzle cooling passages
C.cylinder jackets
D.heat exchanger
A.the power stroke
B.the compression stroke
C.low load operation only
D.periods of standby
A.475 RPM
B.950 RPM
C.1900 RPM
D.2400 RPM
A.suction pressure regulator
B.thermostatic bypass valve
C.sea water temperature
D.water level in the expansion tank
A.operated manually once an hour
B.operated until the engine has started
C.placed into operation only at maximum load
D.adjustable to meet lubrication requirements
A.remove suspended and precipitated solids from the boiler water
B.completely drain the boiler in an emergency situation
C.prevent hardened scale deposits in the water drum
D.remove floating impurities from the oily water surface
A.around the engine
B.around the cooler
C.to the expansion tank
D.overboard
A.seawater contamination
B.frequent surface blows
C.dissolved oxygen deaeration
D.frequent bottom blows
A.total dissolved solids
B.salt contamination
C.water hardness
D.chlorine contamination
最新试题
Diesel engine control can be obtained by the bridge ().
Lube oil cannot be efficiently filtered if its ().
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?()
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the ().
The function of diesel engine piston compression rings is to ().
Maximum horsepower of a diesel engine is attained ().
White smoke exhausting from an operating diesel engine may indicate ().
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to ().
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?()
To determine if the lube oil filter elements need changing, ().