题目内容

The ECU____ the injector to deliver just enough fuel to achieve an ideal air/fuel ratio of 14.7:1.

A. send
B. site
C. cite
D. signals

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The ______ has the job of supplying a combustible mixture of air and fuel to the engine.

A. staring system
B. cooling system
C. lubricating system
D. fuel system

The length of time that the ______ are open determines the amount of fuel that is sprayed into the engine.

A. sensors
B. filters
C. injectors
D. pipes

An EFI system can be consider as having ______ subsytems.

A. one
B. two
C. three
D. four

The purpose of the ______ is to filter,meter,and measure intake air flow into the engine.

A. electronic control system
B. air induction system
C. fuel system
D. fuel supply system

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