A.easterly courses in high latitudes
B.southerly courses in high latitudes
C.westerly courses in low latitudes
D.easterly courses in low latitudes that cross the equator
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A.plane tangent at one point
B.cylinder tangent at the equator
C.cone tangent at one parallel
D.infinite series of cones tangent at selected parallels
A.True position
B.True meridian
C.True course
D.True bearing
A.Longitude
B.Latitude
C.Height
D.Bearing
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A preferred-channel buoy may be（）.
A special mark (yellow buoy)，if lighted，may exhibit which light rhythm?（）
A white buoy with an open-faced orange diamond on it indicates（）.
Buoys which mark isolated dangers are painted with alternating（）.
An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol? （）
A nun buoy will（）.
An orange and white buoy marking a danger area will have what symbol on it?（）
How is the intensity of a light expressed in the Light Lists?（）.
A yellow buoy may mark a(n)（）.
A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH OR WEST FROM A FIXED POINT，E.G. A WRECK is（）.