A.pay out
B.make fast
C.shorten
D.hold on
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A.calls
B.called
C.calling
D.call
A.telephone
B.telegraph
C.telex
D.VHF
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
最新試題
Should that kind of weather（），the two ships would touch each other.
My ship（）that port next month.
The height of a VHF radio antenna is more important than the power output wattage of the radio because（）.
I have been instructed that on my voyage（），I shall call at Maderra to pick up some cargo.
Do you require any further assistance ? My ship is safe now and no assistance is necessary.This VHF communication generally takes place during（）.
The control of distress traffic is the responsibility of（）.
（），you can’t finish discharging tomorrow!
Channel 13 (156.65 MHz)，the designated bridge-to-bridge channel，may NOT be used to（）.
What does the abbreviation VHF stand for?（）
The expression STAND-BY ENGINE means:（）.