stored in a common fuel line
pumped by the injection pump
at low pressure
already atomized
第1题：
Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primarily by
A.heat conduction into the injected fuel oil
B.heat conduction into the water jacket wall
C.water circulation through passages in the holder
D.fuel oil circulation through passages m the holder
第2题：
quantity of fuel injected is decreased
quantity of fuel injected will always be increased
start of injection is advanced
duration of injection will always be greater
第3题：
Fuel droplets injected into a diesel engine cylinder must have adequate penetration to ____.
A.prolong the ignition delay period
B.ensure the beginning of fuel injection
C.thoroughly utilize the air charge
D.allow controlled fuel combustion
第4题：
is purified
in timed
is compressed
atomizes
第5题：
valve will open later
valves will close later
amount of fuel injected will be increased
amount of fuel injected will be decreased
第6题：
When fuel is injected late into a diesel engine cylinder_______.
A.the exhaust will be clear
B.fuel consumption will be low
C.all the fuel will be burned at top dead center
D.fuel consumption will be high
第7题：
controlling the amount of fuel injected into the cylinders
varying the speed of the turbocharger
adjusting the compression ratio
changing the timing of the fuel injection camshaft
第8题：
A.filtering
B.centrifuging
C.depositing
D.operating
第9题：
Quantity of fuel injected tends to be decreased
Quantity of fuel injected will always be increased
Start of injection tends to be advanced
Duration of injection will always greater
第10题：
improper adjustment of the bypass valve
a dribble in the fuel injection nozzle
insufficient leak-off through injection nozzle packing
a malfunctioning injection nozzle