A.a fire -tube boiler
B.an internal combustion engine
C.an external combustion engine
D.an internal combustion generator
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A.the bearing clearances
B.the bearing thickness
C.the bearing strength
D.the bridge hardness
A.on top cover
B.on sides of bowl
C.in drain line on the discs
D.on the discs
A.low specific heat
B.high specific heat
C.corrosive action
D.high viscosity
A.low specific heat
B.corrosive action
C.high expense
D.acid property
A.injecting fuel oil into a cylinder
B.removing exhaust gases from the cylinder
C.forcing air into the cylinders under pressure after the exhaust valve has dosed
D.a combination of all the above
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Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
Lube oil cannot be efficiently filtered if its （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
The function of diesel engine piston compression rings is to （）.
To determine if the lube oil filter elements need changing, （）.
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
Proper filtering and straining of fuel oil is important because the （）.
Diesel engine control can be obtained by the bridge （）.
Combustion knock occurring in a diesel engine can be caused by （）.
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）