题目内容
Fuel is injected into the area around the throttle valve, where air velocity is at a ______.
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Each cylinder has its own ______that delivers fuel directly to the intake valve.
EFI supplies an accurate air/fuel _____ to the engine no matter what operating conditions are encountered.
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.
The______ spark is generated outside the engine.
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