A.air supply is shut off
B.fuel supply is shut off
C.water supply is shut off
D.safety valve lifts
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A.high steam pressure in the boiler
B.abnormally high feed water temperature
C.abnormally high boiler water temperature
D.steam demand exceeding feed pump capacity
A.Clogged air intake falters
B.Piston blow-by
C.A defective after-cooler
D.Faulty exhaust valves
A.Splash
B.Gravity
C.Pressure
D.Bypass
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
最新試題
A thrust bearing is used with a propulsion diesel engine to （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
Proper filtering and straining of fuel oil is important because the （）.
The main purpose of the piston oil scraper rings is to （）.
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
In using reduction gears to obtain efficient propeller speeds, （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
What is the function of the thrust bearing?（）
To determine if the lube oil filter elements need changing, （）.
Lube oil cannot be efficiently filtered if its （）.