A.react with insufficient speed droop
B.fail to react to small speed changes
C.have excessive sensitivity to small speed changes
D.remain in the neutral position
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A.provide a means of draining the boiler
B.warn the engineer of low water level
C.cool the crown sheet at high firing rates
D.open the burners electrical firing circuits
A.the beveled edges of the intake valves provide for serf-centering during seating
B.intake valves utilize stellite-coated valve seat inserts which reduce wear
C.the volume of air passing through intake valves is less than the volume of air passing through exhaust valves
D.intake valves are less affected to the corrosive action of exhaust gases
A.Drain the accumulated moisture
B.Test the relief valves
C.Watch the temperature to prevent fluctuations in pressure
D.Clean the interior to remove oil and foreign matter
A.worn main bearing journals
B.torsional stress deformation
C.slack thrust bearings
D.bearing shells shim dimensions
A.contaminated with sludge
B.contaminated with carbon
C.diluted with fuel oil
D.diluted with water
最新試題
The main purpose of the piston oil scraper rings is to （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
Routine monitoring of a diesel engine should include （）.
The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as （）.
In a simple mechanical governor, the （）.
The function of diesel engine piston compression rings is to （）.
White smoke exhausting from an operating diesel engine may indicate （）.
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.