题目内容

In the EFI system, it is possible to have systems using only one injector per engine or one injector per ______.

A. piston
B. cylinder
C. crankpin
D. stroke

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Fuel is injected into the area around the throttle valve, where air velocity is at a ______.

A. minimum
B. maximum
C. middle
D. fit

Each cylinder has its own ______that delivers fuel directly to the intake valve.

A. injective
B. inject
C. injector
D. injected

EFI supplies an accurate air/fuel _____ to the engine no matter what operating conditions are encountered.

A. proportion
B. scale
C. ratio
D. number

By delivering fuel directly at the back of the intake valve, the intake_____ design can be optimized to improve air velocity at the intake valve.

A. pipe
B. port
C. manifold
D. hose