A.persist
B.persists
C.to persist
D.persisted
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A.pay out
B.make fast
C.shorten
D.hold on
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
最新試題
（），you can’t finish discharging tomorrow!
If it（）fine tomorrow，we shall start unloading.
What is meant by veering the anchor chain? （）
I am ready（）tow line.
The weather is often（）in a high-pressure area.
There is a drifting mine（）in position 21 degrees 31 minutes North 124 degrees 20 minutes East.
I have been instructed that on my voyage（），I shall call at Maderra to pick up some cargo.
（）both anchors.
A mark or place at which a vessel comes under obligatory entry，transit，or escort procedure is know as（）.
If you know that the vessel you are about to call on the VHF radio maintains a radio watch on both the working and the calling frequencies，which frequency should you call on? （）