A.Safety message
B.Urgency message
C.Distress message
D.Routine message
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A.at
B.on
C.in
D.above
最新試題
The term PROLONGED BLAST refers to（）.
Good anchorage may be obtained anywhere in this water area，the bottom being generally mud and sand，vessel may have（）.
The winch at Hatch No.3 is（）trouble.
Three SHORT BLASTS mean（）.
The ship will be（）demurrage soon.
Geographic range is the maximum distance at which a light may be seen under（）.
In the International Code of signals，a group of three letters indicates（）.
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.
Which tool is used to open the strands of fiber lines when making an eye splice?（）
I hope you don’t mind（）the radar for us in a short time.