A.the equator
B.a loxodromic curve
C.a small circle
D.a meridian
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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
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
最新試題
A special mark (yellow buoy)，if lighted，may exhibit which light rhythm?（）
An orange and white buoy with a rectangle on it displays（）.
Buoys which mark isolated dangers are painted with alternating（）.
A relative bearing is always measured from（）.
A preferred-channel buoy may be（）.
An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol? （）
A rock and sand structure extending from the bank of the river toward the channel is known as a（）.
A yellow buoy may exhibit a(n)（）.
A preferred-channel buoy will show a（）.
A special purpose buoy shall be（）.