A.telephone
B.telegraph
C.telex
D.VHF
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A.calls at
B.has called at
C.call at
D.will call at
A.Calling frequency
B.Distress frequency
C.Urgency frequency
D.Working frequency
A.to be
B.is
C.will be
D.has been
A.at
B.by
C.in
D.on
A.home
B.family
C.China
D.returning
最新試題
（），the cargo plan is not well done.
Vessels wishing to communicate with the Port Health Officer should do（）on VHF Channel 14.
I have been instructed that on my voyage（），I shall call at Maderra to pick up some cargo.
My ship（）that port next month.
Should that kind of weather（），the two ships would touch each other.
I’d like to know something about the cargo condition at the loading port（）detail.
There is a drifting mine（）in position 21 degrees 31 minutes North 124 degrees 20 minutes East.
The weather is often（）in a high-pressure area.
Please（）all the lines fore and aft，the vessel is just in her position of the berth now.
All VHF marine band radios operate in the simplex mode，which means that（）.