题目内容

The fuel system has the job of supplying a combustible mixture of air and fuel to the engine. There are two different types of petrol fuel systems: systems with a ______ and systems with electronic fuel injection (EFI).

A. carburetor
B. thermostat
C. throttle
D. regulator

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Carburetor fuel systems and EFI systems are designed to deliver the fuel mixture to the engine in a combustible form, but each system does it in a different way.One basic difference is that carburetors______ the fuel, and injectors spray the fuel.

A. atomize
B. liquidate
C. solidify
D. freezing

There are three pipes (or lines) between the fuel tank ______ the vehicle and the components in the engine compartment.

A. at the rear of
B. at the front of
C. at the top of
D. at the bottom of

and a line filter is fitted in the supply line between the______and the fuel pump, or between the fuel pump and the carburetor.

A. fuel tank
B. oil tank
C. fuel filter
D. oil filter

By measuring engine coolant temperature, the ECM knows the _____ temperature of the engine.

A. effective
B. average
C. highest
D. lowest