A.flashing amber light
B.yellow light with the same characteristics as the sternlight
C.all-round yellow light
D.yellow light with the same characteristics as the masthead light
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A.fuel oil
B.sludge
C.oil refuse
D.All of the above
A.Mayday
B.Pan
C.Safety
D.Interco
A.SOS sent three times
B.ten one-second dashes with a four-second interval between them
C.twelve four-second dashes with a one-second interval between them
D.twelve one-second dashes with a short interval between them
A.1.5 and greater
B.1.25 and greater
C.1.0 and greater
D.0.5 and greater
A.hold anchor
B.leave anchor
C.let go anchor
D.weigh anchor
最新試題
What is normally used to pass a mooring line to a dock?（）
There is something wrong with our radar．All kinds of objects can’t be clearly（）within the definite range.
Tripping defects in anchors frequently occur in（）.
The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word（）.
The best method to stop a vessel from dragging anchor in a sand bottom is to（）.
The use of the danger signal（）.
Which is NOT a distress signal?（）
What is the normal length of anchor cable used to anchor a vessel?（）
To develop maximum anchor holding power，the optimum angle between the anchor’s shank and the mooring lines is（）.
The expression DROP ANCHOR means（）.