Batten down the engine room
start the fire pump
apply carbon dioxide to the fire
shut off the fuel supply
第1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2题：
A safe fuel system must ______.
A.prevent engine overheating
B.have proper air/gasoline fuel mixture ratio
C.be liquid- and vapor-tight
D.supply sufficient air to the intake manifold
第3题：
If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the
A.fuel line connections to the cylinder injection valves
B.gasket surfaces of the fuel oil filters
C.discharge fittings of the fuel injector pumps
D.suction side of the fuel oil transfer pump
第4题：
has begun
takes place
occurs
happens
第5题：
no fuel will be delivered through the nozzle
the nozzle will overheat and crack
time of injection will change
fuel will leak into the drain line
第6题：
In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with ______.
A.low firing pressure
B.low exhaust temperature
C.mechanical knock in each cylinder
D.fuel knock in each cylinder
第7题：
the exhaust valves
the fuel valves
indicator cocks
the fuel pumps
第8题：
If some of the cylinders are not firing, the ones affected may be determined by watching
A.the exhaust temperature
B.the exhaust pressure
C.the governor
D.the fuel flow meter
第9题：
corrosion and grooving of exhaust valves
corrosion and gumming of the fuel injection pump
salt deposits in the exhaust manifold
slag deposits in the fuel injection equipment
第10题：
be fitted with a positive fuel shut-off valve located at the tank
have a shut-off valve at the top of the tank
have a gate valve easily accessible in the space where the tank is located
have a drain cock at the lowest point in the fuel line