单项选择题
A.fuel treatment B.fuel combustion C.fuel injection D.fuel separating
The fuel is supplied to the pump through ports or openi...
单项选择题The fuel is supplied to the pump through ports or openings in the （） or cylinder of the pump.
A.bottle B.injector C.piston D.barrel
The fuel injector pump is operated by （） which drives t...
单项选择题The fuel injector pump is operated by （） which drives the plunger up and down.
A.a separate motor B.a cam C.a generator D.a chain
The fuel injector injects a fine spray of fuel into the...
单项选择题The fuel injector injects a fine spray of fuel into the hot air and combustion （）, producing much high pressure in the gases.
A.has begun B.takes place C.occurs D.happens
