A.Splash
B.Gravity
C.Pressure
D.Bypass
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A.scavenging action of the piston
B.piston type vacuum pump taking suction off a differential manometer
C.gland exhausting manometer
D.crankcase exhaust fan
A.prevent soot fires in the exhaust system
B.prevent exhaust gas erosion of the tubes
C.increase the velocity of exhaust gas flow
D.increase the rate of heat transfer
A.a spindle lubricator
B.an oil jet
C.internal splashing
D.drilled passages in the crankshaft
A.the same, whether at sea, or during maneuvering
B.adjusted during each hour of operation while at constant RPM
C.higher at sea than while maneuvering
D.lower at sea than while maneuvering
A.improve fuel economy
B.increase the air charge velocity
C.reduce the risk of explosion
D.all of the above
A.Increased suction head pressure
B.Decreased feedwater temperature
C.Pump recirculating line being open too much
D.Excessive feedwater temperature
A.The safety valve escape piping should be disconnected from the valve body and a blank inserted
B.The boiler vent valves should be opened
C.All handhole/manhole covers should be tightened up as much as possible to preclude any leaks
D.All of the above
A.salinity is abnormally high
B.steam demand is too high
C.water level is abnormally low
D.feedwater flow is low
A.internal crankshaft passages
B.immersion in oil
C.splash lubrication
D.injection lubrication
A.Increases the sludge forming tendency of lube oil
B.Prevents the accumulation of combustible gases
C.Improves lube oil cooling
D.Improves cold weather starting
最新试题
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST ().
Maximum horsepower of a diesel engine is attained ().
A diesel engine piston ring face is in direct contact with the ().
Proper filtering and straining of fuel oil is important because the ().
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to ().
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by ().
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?()
An automated diesel engine should normally shut down due to ()
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in ().
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting ().