A.gnomonic curve
B.small circle
C.meridian
D.great circle
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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
A.switching
B.alternating
C.oscillating
D.fluctuating
最新試題
A V-shaped ripple with the point of the V pointing upstream in a river may indicate a（）.
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 with a rectangle on it displays（）.
Buoys which mark dredging areas are painted（）.
An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol? （）
A special purpose buoy shall be（）.
Branford reef is（）.
Buoys which mark isolated dangers are painted with alternating（）.
How would you pass a red buoy in the maritime buoyage system “A”? （）
A white buoy with a blue band is（）.