A.calls at
B.has called at
C.call at
D.will call at
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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
A.cast
B.to cast of
C.cast off
D.to cast off
最新試題
（）both anchors.
If it（）fine tomorrow，we shall start unloading.
There is a VHF set（）the front of the wheelhouse.
A call between any two ship stations on an intership working frequency shall have a maximum duration of（）.
The weather is often（）in a high-pressure area.
The generators on your rig have shut down，leaving you without navigation lights. Which emergency signal would you transmit over the VHF radio to alert vessels in the area of your predicament? （）
（）your present speed?
There is a drifting mine（）in position 21 degrees 31 minutes North 124 degrees 20 minutes East.
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? （）
The expression STAND-BY ENGINE means:（）.