相关题目
In general, extending large angle simple flaps increases lift and drag coefficient, decreases critical angle of attack, and （ ） the ratio of lift and drag.
The flight altitude, airspeed, M number and temperature of FMS are mainly displayed on the （ ） .
Larger separations than the specified minima （ ） whenever wake turbulence or exceptional circumstances such as unlawful interference call for extra precautions.
The minimum horizontal separation standard in approach radar control should be （ ）km or more.
When an ATC unit changes the type of call sign of an aircraft, that unit shall ensure （ ） the call sign indicated by the flight plan when the aircraft is transferred to another ATC unit.
To avoid confusion, the ATC unit should, if appropriate, identify the aircraft which will（ ） to change its call sign by referring to its position and/or level.
The main feature of next generation navigation system is （ ） .
Which following elements of information shall the position reports contain? a. aircraft identification, b. position, c. time, d. flight level or altitude, e. next position and time over, f. ensuing significant point.
The prescribed standard turn slope in a holding procedure is （ ） degrees.
The spread of long wave and medium wave is mainly in the form of （ ） .
