What is a coded racon?

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

What is a coded racon?
A.A racon which automaticallyactivate itself
B.A racon only work at night
C.A racon which display a morsecode on the radar screen
D.A future racon expected to beoperational after Y2000

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