相关题目
Air traffic means all aircraft in flight or operating on the （ ） of an aerodrome.
The true airspeed is the airspeed of an aircraft relative to （ ） air.
Airspeed is the speed of an aircraft relative to its surrounding （ ） .
Airport is an area on land or （ ） that is used or intended to be used for the landing and takeoff of aircraft.
An aircraft shall fit in （ ） aircraft approach category.
“Aircraft” means any machine that can derive support in the （ ） from the reactions of the air other than the reactions of the air against the earth＇s surface.
Aerial Refueling is a procedure used by the （ ） to transfer fuel from one aircraft to another during flight.
If the radar receiver detects the retarding time tR＝500(S between transmitting pulse and receiving pulse, now the target is （ ） km from the radar station.
“Advise （ ）” means “Tell me what you plan to do”.
The departure station is responsible for Search and Rescue action upon receipt of the destination station’s acknowledgment for the flight （ ） message.
