A300

?8432-1.What is commonly used to connect an emer- gency source of power, and at the same time disconnect the normal hydraulic source from critical parts of a landing gear or wheel braking system for operation (usually when the normal source system fails)?

发布于 2021-02-18 22:09:56

【单选题】
A ?Selector valve.
B ?Shuttle valve.
C ?Sequence valve.

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