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
How should the letter O be pronounced when spoken on the radiotelephone?（）
Should that kind of weather（），the two ships would touch each other.
What does the abbreviation VHF stand for?（）
There is a VHF set（）the front of the wheelhouse.
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（）.
What is meant by veering the anchor chain? （）
Channel 13 (156.65 MHz)，the designated bridge-to-bridge channel，may NOT be used to（）.
You are making a telephone call ship-to-shore using the VHF-FM service.You can tell that the working channel is busy if you hear（）.
（），the cargo plan is not well done.