A.Urgency signal
B.Safety signal
C.Distress signal
D.None of the above
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A.a floating wreck
B.a survivor at sea
C.a man who had fallen overboard
D.a drilling rig
A.a message about the safety of navigation will follow
B.a message of an urgent nature about the safety of a ship will follow
C.the sender is in distress and requests immediate assistance
D.you should secure your radiotelephone
A.Safety message
B.Urgency message
C.Distress message
D.Routine message
A.at
B.on
C.in
D.above
最新試題
Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.
Which statement is TRUE about nylon line?（）
Where would you find the call sign or call letters of the radio station on your ship?（）
Geographic range is the maximum distance at which a light may be seen under（）.
Which may ignite fuel vapors?（）
I hope you don’t mind（）the radar for us in a short time.
Proper use shall be made（）radar equipment if fitted and operational.
The ship is now down（）head.
Which statement is TRUE with respect to the elasticity of nylon mooring lines?（）.
Which term describes a part of a natural fiber line?（）