题目内容

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

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

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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

The______ spark is generated outside the engine.

A. electric
B. eleven
C. excuse
D. electrical

Injecting the fuel______ in relation to the movement of the crankshaft.

A. at the right time
B. at the same time
C. in time
D. by time