A.Help，Help，Help
B.Mayday，Mayday，Mayday
C.Save，Save，Save
D.Rescue，Rescue，Rescue
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A.on
B.at
C.in
D.above
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
A.I am going to change to VHF channel
B.I am certainly going to change to VHF channel
C.Changing to VHF channel
D.VHF channel. has been changed
A.on
B.in
C.at
D.up
最新試題
There is a drifting mine（）in position 21 degrees 31 minutes North 124 degrees 20 minutes East.
（），the cargo plan is not well done.
Do you require any further assistance ? My ship is safe now and no assistance is necessary.This VHF communication generally takes place during（）.
How（）the cargo at loading port?
The height of a VHF radio antenna is more important than the power output wattage of the radio because（）.
（），you can’t finish discharging tomorrow!
The space in Hatch No.4 tweendeck is too（）.
A mark or place at which a vessel comes under obligatory entry，transit，or escort procedure is know as（）.
The control of distress traffic is the responsibility of（）.
Please（）all the lines fore and aft，the vessel is just in her position of the berth now.