发布日期:2021-03-22
A.Fire a red flare at night or a red smoke signal by day
B.Send the Morse signal N by flashing light
C.Make a round turn (360°) and resume course
D.Make an S turn (hard right then hard left) and resume course
热门试题
热门资讯
暂无相关推荐~
使用浏览器的分享功能,把这篇文章分享出去
确定