A.reduce water temperature
B.reduce water turbulence
C.provide an air cushion
D.allow for an increase in water volume as the engine warms up
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A.changing filter elements would not interrupt engine operation
B.filtering occurs twice in each pass of oil through the system
C.clogging will not occur
D.dropping pressure is half of that through a single filter unit
A.decrease in maximum cylinder pressure
B.increase in ignition lag
C.decrease in fuel consumption per horsepower-hour
D.decrease in exhaust manifold pressure
A.low voltage trip to trip
B.reverse power trip to trip
C.damage to windings
D.excessive exhaust temperatures
A.ensure penetration and distribution of the fuel in the combustion chamber
B.ensure the needle valve is flushed clean during each injection
C.prevent combustion gas blowback into the open needle valve
D.prevent reflected pressure waves when the needle valve closes
A.slightly less than atmospheric pressure
B.approximately equal to exhaust manifold pressure at all times
C.that is widely fluctuating constantly
D.decreasing as engine load increases
最新試題
Lube oil cannot be efficiently filtered if its （）.
The function of diesel engine piston compression rings is to （）.
The main purpose of the piston oil scraper rings is to （）.
A thrust bearing is used with a propulsion diesel engine to （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
To determine if the lube oil filter elements need changing, （）.
What is the function of the thrust bearing?（）
In using reduction gears to obtain efficient propeller speeds, （）.
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
In a simple mechanical governor, the （）.