单项选择题
A.Loading B.Load C.Lade D.Laden
International distress signal in VHF calling for help i...
单项选择题International distress signal in VHF calling for help is（）.
A.Help，Help，Help B.Mayday，Mayday，Mayday C.Save，Save，Save D.Rescue，Rescue，Rescue
There are salvage operations（）position 120.0N 12.5E.A.o...
单项选择题There are salvage operations（）position 120.0N 12.5E.
A.on B.at C.in D.above
When it is accepted to remain on the frequency indicate...
单项选择题When it is accepted to remain on the frequency indicated，you should say（）.
A.Standing by on VHF frequency B.Coming to VHF frequency C.VHF frequency. is the best place for you to stay by D.remaining in frequency. and do not change
