A.Air filters
B.Fuel oil strainers
C.Crank case oil level
D.Pyrometer readings
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A.increases the density of the air
B.decrease the density of the air
C.increases the specific heat of the air
D.decreases the specific heat of the exhaust
A.The direction of pressure on the journal in four-stroke engine is continuously
B.positive feed lubricators are installed on all bearings of four-stroke engine, whereas as a splash feed system is used on tow-stroke engine
C.four-stroke engines usually utilize a heavier grade of oil than tow-stroke engines
D.Low-stroke engines usually consume less lube oil than four-stroke engines
A.overheated injection pumps
B.water condensed in the cylinders
C.fuel dilution of the lube oil
D.air in the fuel system
A.check the pyrometer readings
B.check the crankcase oil level
C.check the fuel oil strainers
D.clean the fuel system
A.carbonization of oils from the combustion chambers
B.emulsions of lube oil and water
C.coagulation of unburned fuel below the piston rings
D.all of the above
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