A.fixed red light
B.Morse (A) white light
C.green light
D.flashing red light
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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
A.flashing
B.pulsating
C.occulting
D.alternating
最新試題
From your position you observe a rotating white and green light to the north. This light is most likely（）.
Buoys which mark dredging areas are painted（）.
Except for N-S courses，and E-W courses on the equator，a great circle track between two points，when compared to a rhumb line track between the same two points，will（）.
An orange and white buoy marking a danger area will have what symbol on it?（）
A yellow buoy may exhibit a(n)（）.
An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol? （）
A vessel is（）when she is not at anchor，made fast to the shore，or aground.
Buoys which mark isolated dangers are painted with alternating（）.
A plane that cuts the Earth’s surface at any angle and passes through the center will always form（）.
A spherical buoy may be（）.