單項(xiàng)選擇題For a main diesel engine the lube oil in the bearings is drawn from (), usually located in the bedplate.

A.a gravity tank
B.a sump
C.a vessel
D.a bottle


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1.單項(xiàng)選擇題For a generator engine, after passing through the turbine the exhaust gas may be conducted out into the ().

A.intercooler
B.open air
C.oil fired boiler
D.B and C

3.單項(xiàng)選擇題Fix the fuel injector into () after repair.

A.the cylinder liner
B.the cylinder cover
C.the cylinder jacket
D.the piston

4.單項(xiàng)選擇題Failure of fuel injection is usually due to trouble in the ().

A.exhaust valves
B.mechanical lubricators
C.cooling water pumps
D.fuel injection pumps

5.單項(xiàng)選擇題Factor influencing the position of the interface between the liquid seal and the oil in a purifier is ().

A.throughput
B.back pressure
C.gravity disc
D.None of the above is wrong