Aircraft on the same flying track and at the same altitude under VFR should maintain a longitudinal separation of at least _______ m when cruising at 250km/h or less.
A.1000
B.1500
C.2000
D.3000
正确答案是C
Aircraft on the same flying track and at the same altitude under VFR should maintain a longitudinal separation of at least _______ m when cruising at 250km/h or less.
A.1000
B.1500
C.2000
D.3000
正确答案是C