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
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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
最新試題
The minimum speed an engine must attain before ignition can occur depends upon （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
The function of diesel engine piston compression rings is to （）.
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
Lube oil cannot be efficiently filtered if its （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.