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.
Vessels wishing to communicate with the Port Health Officer should do（）on VHF Channel 14.
Channel 13 (156.65 MHz)，the designated bridge-to-bridge channel，may NOT be used to（）.
How should the letter O be pronounced when spoken on the radiotelephone?（）
Should that kind of weather（），the two ships would touch each other.
（）both anchors.
How（）the cargo at loading port?
What is meant by veering the anchor chain? （）
The generators on your rig have shut down，leaving you without navigation lights. Which emergency signal would you transmit over the VHF radio to alert vessels in the area of your predicament? （）
There is a VHF set（）the front of the wheelhouse.