第1题:
A.Cause2
B.Cause4
C.Cause7
D.Cause15
第2题:
第3题:
第4题:
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
第5题: