题目内容
The rotation beacon and position lights should be turned on to ______ persons to keep clear of the propeller.
查看答案
搜索结果不匹配？点我反馈
更多问题
Pilots need to take extra caution at night to assure the _____ area is clear.
The pilots need to taxi carefully and slowly in ______ areas.
It is recommended that unnecessary _______ equipment be turned off before start-up.
The takeoff and departure briefing is helpful to ______ the respective duties of each member.
微信支付 
支付宝支付