A.a floating wreck
B.a survivor at sea
C.a man who had fallen overboard
D.a drilling rig
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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
Proper use shall be made（）radar equipment if fitted and operational.
Which tool is used to open the strands of fiber lines when making an eye splice?（）
Which may ignite fuel vapors?（）
Which measure should NOT be taken to reduce the pounding of a vessel in a head sea?（）
Which spoken emergency signal would you use to call a boat to come assist a man overboard?（）
Which mooring line has the least elasticity?（）
The term PROLONGED BLAST refers to（）.
I would be very much（）if you could arrange for a radio technician to come on board as soon as possible for my radar repair.
The ship is not very stable，please（）when making a turn.
The ship is now down（）head.