单项选择题
The fuel oil system for a diesel engine can be considered in two parts--the fuel supply and the （） systems.
A.fuel treatment
B.fuel combustion
C.fuel injection
D.fuel separating
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相关考题
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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 -
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 -
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
