單項(xiàng)選擇題()tankers over 100 meters long must not proceed beyond Dongbei Buoy.

A.Loading
B.Load
C.Lade
D.Laden


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1.單項(xiàng)選擇題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

2.單項(xiàng)選擇題There are salvage operations()position 120.0N 12.5E.

A.on
B.at
C.in
D.above

3.單項(xiàng)選擇題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

4.單項(xiàng)選擇題When the changing of a VHF channel / frequency is accepted,say().

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

5.單項(xiàng)選擇題Our company is a professional one,and you may rely()it.

A.on
B.in
C.at
D.up