A.should be passed close aboard on either side
B.indicates that special caution is required
C.is used at a channel bifurcation or junction
D.is painted with red and white vertical stripes
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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
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 white buoy with an open-faced orange diamond on it indicates（）.
A plane that cuts the Earth’s surface at any angle and passes through the center will always form（）.
Fishing stake，the position of which frequently（），exist in the area covered by this chart.
A nun buoy will（）.
A white buoy with a blue band is（）.
A preferred-channel buoy will show a（）.
A V-shaped ripple with the point of the V pointing upstream in a river may indicate a（）.
A white buoy with an orange rectangle on it displays（）.
A spherical buoy may be（）.
An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol? （）