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
That the scale of any part of a chart to be larger than the scale of the survey is（）.
The numeral in the center of a wind rose circle on a pilot chart indicates the （）.
Every chart is liable to be incomplete（）.
A chart projection depicting the poles and a small area on either side of a connecting meridian，that is sometimes used for star charts，is the（）.
When a buoy is in position only during a certain period of the year，where may the dates when the buoy is in position be found?（）
A chart with a scale of 1:80，000 would fall into the category of a（）.
The arrangement of charts in the catalogue is（）.
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.
Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.
When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.