p300

On an engine equipped with a pressure-type car- buretor, fuel supply in the idling range is ensured by the inclusion in the carburetor of

发布于 2021-02-16 21:55:04

【单选题】
A a spring in the unmetered fuel chamber to supplement the action of normal metering forces,
B an idle metering jet that bypasses the carburetor in the idle range.
C a separate boost venturi that is sensitive to the reduced airflow at start and idle speeds.

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