A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the().
A.distress position
B.spoken words "Mayday,Mayday,Mayday"
C.ship's name
D.ship's call letters
参考答案:B
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the().
A.distress position
B.spoken words "Mayday,Mayday,Mayday"
C.ship's name
D.ship's call letters
参考答案:B