In coastal water GPS positions should be checked by ______?

题库:船长 类型:最佳选择题 时间:2019-02-14 17:22:46 免费下载:《甲类船长英语考证》Word试卷

In coastal water GPS positions should be checked by ______?
A.Visual observations
B.Radar observations
C.Buoys and seamarks
D.Visual and radar observations

本题关键词:BE值,僵a,ECF-A,EP21-A,EP6-A,EP18-A,EP7-A,Lp(a),Lp（a）,A-aDO2;