题目内容
The ______ has the job of supplying a combustible mixture of air and fuel to the engine.
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The length of time that the ______ are open determines the amount of fuel that is sprayed into the engine.
An EFI system can be consider as having ______ subsytems.
The purpose of the ______ is to filter,meter,and measure intake air flow into the engine.
The mixture is delivered to the ______ where it is burned.
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