When flying in the mountainous area, and there is strong wind or strong updraught/downdraught, the aircraft should maintain at least _______ meters minimum safety altitude from the obstacles.
A.600
B.800
C.1000
D.1200
正确答案是C
When flying in the mountainous area, and there is strong wind or strong updraught/downdraught, the aircraft should maintain at least _______ meters minimum safety altitude from the obstacles.
A.600
B.800
C.1000
D.1200
正确答案是C