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
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A.True position
B.True meridian
C.True course
D.True bearing
A.Longitude
B.Latitude
C.Height
D.Bearing
最新試題
Fishing stake，the position of which frequently（），exist in the area covered by this chart.
Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic? （）
Buoys which mark dredging areas are painted（）.
A vessel is（）when she is not at anchor，made fast to the shore，or aground.
A preferred-channel buoy may be（）.
A parallel of latitude other than the equator is a（）.
A preferred-channel buoy will show a（）.
A plane that cuts the Earth’s surface and passes through the poles will always form（）.
A yellow buoy may exhibit a(n)（）.
Branford reef is（）.