单项选择题
A chart with a scale of 1:80，000 would fall into the category of a（）.
A.sailing chart
B.general chart
C.coastal chart
D.harbor chart
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相关考题
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单项选择题
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（）.
A.Azimuthal gnomonic projection
B.Lambert conformal projection
C.Transverse Mercator projection
D.Polyconic projection -
单项选择题
A chart position enclosed by a square is a（n）（）.
A.fix
B.estimated position
C.dead reckoning position
D.running fix -
单项选择题
（）is not a position-fixing system.
A.Hifix
B.Hyperfix
C.Trisponder
D.WGS84
