单项选择题
A.National Geospatial-Intelligence Agency B.Coast Guard C.Naval Observatory D.National Ocean Service
A chart with a scale of 1:80，000 would fall into the ca...
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
A chart projection depicting the poles and a small area...
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
A chart position enclosed by a square is a（n）（）.A.fixB....
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
