A.10
B.7
C.4
D.1
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A.open air-box drains
B.loss of cooling water to the diffuser
C.gradual fouling of the air filters
D.improperly timed exhaust valves
A.concentrations of calcium sulfate in the boiler water
B.fuel oil in the feed water
C.improper treatment of the feed water with calcium sulfate
D.excessive feed water alkalinity
A.High oxygen concentration
B.Low pH
C.Proper alkalinity
D.All of the above
A.525 RPM
B.775 RPM
C.1550 RPM
D.1800 RPM
A.low firing pressure and low exhaust temperatures
B.low firing pressure and normal exhaust temperatures
C.high firing pressure and low exhaust temperatures
D.high firing pressure and high exhaust temperatures
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Combustion knock occurring in a diesel engine can be caused by （）.
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
A diesel engine piston ring face is in direct contact with the （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
In using reduction gears to obtain efficient propeller speeds, （）.
Proper filtering and straining of fuel oil is important because the （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
What is the function of the thrust bearing?（）
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）