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单选题
Which of the conditions listed may occur in an operating diesel engine if air pockets form within the cylinder head circulating water passages? （）
A
Hydraulic stress and distortion will develop
B
Hot spots will develop
C
Fuel oil viscosity will increased
D
An increase in trapped deposits of scale and dirt
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更多 “单选题Which of the conditions listed may occur in an operating diesel engine if air pockets form within the cylinder head circulating water passages? （）A Hydraulic stress and distortion will developB Hot spots will developC Fuel oil viscosity will increasedD An increase in trapped deposits of scale and dirt” 相关考题
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CompressorC
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amount of fuel injected will be decreased
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Decreased connecting rod bearing clearanceB
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Exhaust temperatureB
Lube oil levelC
Lube oil pressureD
Water level in the expansion tank
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单选题Which of the listed conditions will occur if a diesel engine exhaust valve is leaking?（）A
Loss of compression for that cylinderB
Misfiring or rough runningC
Damage to the valveD
All of the above
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单选题Which of the listed cylinder liner surface conditions indicates proper lubrication?（）A
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Bright appearanceC
Thin layer of lacquerD
Thick oily film
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Excessive knowledge or skillC
Human errorD
Excitement
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Compression ratioB
Fuel/Air ratioC
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Lube oil pressure
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单选题Which of the listed classes of fire would most likely occur in the engine room of a vessel?（）A
Classes A and BB
Classes B and CC
Classes C and DD
Classes A and D
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单选题As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）A
Exhaust temperaturesB
Raw water pressureC
Lube oil pressureD
Air box pressure
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The density of the air entering the compressorB
The temperature of the air entering the compressorC
The designed rotating speed of the compressorD
A leaking head gasket
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单选题The arrangement and shape of the cams on a diesel engine camshaft directly control which of the listed groups of operating conditions?（）A
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fuel consumption, efficiency, and cylinder pressureD
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Reduces the efficiency of the plantC
Takes the load off the compressorD
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Loss of suctionB
Increased clearancesC
Decreased clearanceD
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单选题（） is a precaution which contributes to avoiding trouble under normal operating conditions.A
Constant inspectionB
Keeping constant loadC
Remaining constant temperatureD
Varying speed
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Current and voltage may be in phaseB
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Current may lag the voltageD
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Engine room bilgesB
Paint lockerC
Battery storage lockerD
Fuel oil tank
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analoggerB
bell loggerC
alarm loggerD
data logger
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单选题Which of the following conditions may need to be reduced when operating a large, low speed, main propulsion, diesel engine at low loads?（）A
Injection pressuresB
Control air supply pressureC
Cooling water flow through after-coolersD
Lube oil temperature
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