相关题目
Priority indicator QD in SITA represents（ ）.
Aerodrome information should not be passed to aircraft （ ） ．
When the controller specifies “stop altitude squawk”, the pilot should respond by （ ） ．
The controller will issue instructions using the phrase “（ ）” in cases where the Mode C altitude readout differs significantly from the altitude reported by the pilot.
A typical transponder has four windows which can be set to any number between （ ） . This gives a total of 4,096 possible codes.
The “blips” of light on the radar screen are called raw radar （ ） ．
The coded signal transmitted by the （ ） mounted on the radar antenna, causes the aircraft transponder to reply automatically with a specific coded signal.
（ ） is the airborne portion of the secondary surveillance radar system.
Which secondary radar code below is right?
The control unit established to provide Air Traffic Control Service to controlled flights arriving at, or departing from, one or more aerodromes, is （ ）.
