When circumnavigating the thunderstorm, the aircraft must remain at least_______km from the CB or solid clouds at night.
A.5
B.10
C.15
D.20
正确答案是B
When circumnavigating the thunderstorm, the aircraft must remain at least_______km from the CB or solid clouds at night.
A.5
B.10
C.15
D.20
正确答案是B