When over the waypoint, or () check the fuel
A.at least every 15 min B.at least every 30 min C.at least every 45 min D.at least every 60 min正确答案B
When over the waypoint, or () check the fuel
A.at least every 15 min B.at least every 30 min C.at least every 45 min D.at least every 60 min正确答案B
