题目内容

For both automatic and HUD landing systems, the equipment requires special approval for its design and also for each individual ____.

A. setup
B. assembly
C. mounting
D. installation

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Radars are always used by ATC units to provide ______ to IFR flights.

A. direction
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C. vectors
D. assistance

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A. assign
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As the aircraft gets closer to the localizer, controllers will ______ approach clearance.

A. give
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Pilots will be expected to _______ direct to the airport after passing FAF.

A. procedure
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