海船船员考试
单选题The amount of fuel delivered by a unit injector is controlled by the （）A camshaftB main springC rack positionD nozzle orifice size
题目
camshaft
main spring
rack position
nozzle orifice size
相似问题和答案
第1题：
The amount of fuel delivered by a helical plunger fuel injection pump is controlled by ______.
A.varying the pump discharge pressure
B.varying the pump return pressure
C.rotation of the pump plunger
D.rotation of the pump barrel
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：
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：
the cylinder liner
the cylinder cover
the cylinder jacket
the piston
第5题：
prolonged maintenance intervals
improved atomization
greater fuel economy
incomplete combustion
第6题：
Fuel injector的中文意思是（）。
正确答案:燃油喷射器
第7题：
deliver proper fuel quantity to the injection nozzle
provide rapid fuel injection cutoff
control fuel quantity entering the pump body
control fuel pressure delivered to the combustion chamber
第8题：
Fuel is admitted to a diesel engine cylinder through the ______.
A.injector nozzles
B.carburetor
C.exhaust ports
D.intake valves
第9题：
being compressed
to be pumped up
is pressurized
are built up
第10题：
a leaking fuel injector nozzle
a clogged air filter
excessively early fuel injection
malfunctioning valves