A.lettered
B.spherical
C.showing a white light
D.All of the above
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A.the equator
B.a great circle
C.a small circle
D.a meridian
A.the equator
B.a loxodromic curve
C.a small circle
D.a meridian
A.Great circle
B.Equator
C.Small circle
D.Meridian
A.great circle
B.loxodromic curve
C.small circle
D.gnomonic curve
A.be green in color
B.have an even number
C.be left to port when entering from seaward
D.be cylindrical in shape
最新試題
A white buoy with an open-faced orange diamond on it indicates（）.
Buoys which mark isolated dangers are painted with alternating（）.
A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH OR WEST FROM A FIXED POINT，E.G. A WRECK is（）.
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（）.
A nun buoy will（）.
A preferred-channel buoy may be（）.
A structure，usually made of stone，or cement pilings，which extends from the bank at approximately right angles to the current is called a（）.
A yellow buoy may exhibit a(n)（）.
A relative bearing is always measured from（）.