If the transponder display is jammed due several aircraft close to each other, the controller can instruct one aircraft to set transponder _______ .
A.OFF
B.ON
C.STANDBY
D.TEST
正确答案是C
If the transponder display is jammed due several aircraft close to each other, the controller can instruct one aircraft to set transponder _______ .
A.OFF
B.ON
C.STANDBY
D.TEST
正确答案是C