A.be green in color
B.have an even number
C.be left to port when entering from seaward
D.be cylindrical in shape
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A.fixed red light
B.Morse (A) white light
C.green light
D.flashing red light
A.gnomonic curve
B.small circle
C.meridian
D.great circle
A.relative bearing
B.range line
C.track line
D.estimated position
A.painted color
B.light color and phase characteristic
C.type of structure
D.All of the above
A.fixed red light
B.Morse (A) white light
C.composite group-flashing light
D.yellow light
最新試題
A relative bearing is always measured from（）.
A yellow buoy may mark a(n)（）.
A structure，usually made of stone，or cement pilings，which extends from the bank at approximately right angles to the current is called a（）.
An orange and white buoy marking a danger area will have what symbol on it?（）
A special mark (yellow buoy)，if lighted，may exhibit which light rhythm?（）
A vessel is（）when she is not at anchor，made fast to the shore，or aground.
From your position you observe a rotating white and green light to the north. This light is most likely（）.
An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol? （）
Buoys which mark isolated dangers are painted with alternating（）.
A nun buoy will（）.