题目内容
词汇与结构In addition, the airport itself has special considerations for low ____ operations.
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词汇与结构The airport itself has special considerations for low visibility operations including different lighting for approach, runways, and taxiways as well as the location of ____ equipment.
词汇与结构A pilot of an aircraft in instrument ____ conditions, by the means of radio, GPS or INS navigation with no assistance from air traffic control, can navigate to the airport.
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