A.Top center
B.Lower-left corner
C.Part of the chart title
D.Any clear area around the neat line
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A.DR plot
B.track line
C.heading
D.estimated course
A.Lambert conformal
B.Mercator
C.azimuthal
D.gnomonic
A.total number of observations
B.average wind force on the Beaufort scale
C.average wind force in knots
D.percentage of calms
A.equal to the longitude expressed in time units
B.about 16 minutes
C.the difference between the GHA of mean sun and the first point of Aries
D.15°of arc
A.radar conspicuous beacon
B.circular radiobeacon
C.radar transponder beacon
D.radar calibration beacon
最新試題
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
The soundings on the imperial chart are measured in（）.
The soundings on the chart are based on the depth of water available at （）.
The numeral in the center of a wind rose circle on a pilot chart indicates the （）.
A chart with a scale of 1:80，000 would fall into the category of a（）.
Charts showing the coast of Mexico are produced by the United States（）.
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.
What defines a great circle? （）
The short-long dashed，magenta lines parallel to York River Entrance Channel mark（）．
A chart position enclosed by a square is a（n）（）.