题目内容

The______ spark is generated outside the engine.

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

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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

The EFI system does not rely on any major adjustments for cold enrichment or fuel metering. Because the system is mechanically simple ,maintenance requirements are _______.

A. fortified
B. augmented
C. added
D. reduced

Any fuel that is not delivered to the ____manifold by the injector is returned to the tank through a fuel return pipe.

A. closed
B. open
C. exhaust
D. intake

During cold engines starting ,many engines incorporate a cold start injector designed to improve______below a specified coolant temperature.

A. stability
B. driveability
C. reliability
D. startability