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
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（）.
A nun buoy will（）.
How is the intensity of a light expressed in the Light Lists?（）.
A mid-channel buoy，if lighted，will show a（）.
A special mark (yellow buoy)，if lighted，may exhibit which light rhythm?（）
A white buoy with an orange rectangle on it displays（）.
A white buoy with a blue band is（）.
A white buoy with an open-faced orange diamond on it indicates（）.
Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic? （）
A plane perpendicular to the polar axis will never form what line on the Earth’s surface? （）