题目内容
Controllers ________ a set of separation standards that define the minimum distance allowed between aircraft.
查看答案
搜索结果不匹配？点我反馈
更多问题
During flight under IFR, there are no requirements for _______, and as such flying through clouds is permitted.
En-route air traffic controllers ______ clearances and instructions for airborne aircraft.
The higher altitude allows a flight crew to start a climb earlier in case landing is _______.
Aircraft approaching from the north must make visual contact with the airport at a ______ altitude than a flight approaching from the south, because of rapidly rising terrain south of the airport.
微信支付 
支付宝支付