A.magnetic latitudes B.magnetic declinations C.dip D.isogonic lines
A.Lambert conformal B.Mercator C.azimuthal D.gnomonic
A.complete and often very poor surveys B.correct and often very good surveys C.inadequate and often very old surveys D.adequate and present surveys
A.C B.Cl C.Co D.c
A.Azimuthal gnomonic projection B.Lambert conformal projection C.Transverse Mercator projection D.Polyconic projection
A.A rhumb line appears as a straight line B.Distance is measured at the midlatitude of the track line C.Meridians appear as curved lines converging toward the nearer pole D.Parallels，except the equator，appear as curved lines
A.Aero light B.Radar station C.Radar transponder beacon D.Radiobeacon
A.Top center B.Lower-left corner C.Part of the chart title D.Any clear area around the neat line
A.cylindrical projection B.simple conic projection C.polyconic projection D.rectangular projection
A.on a regional basis B.on a national basis C.shown orderly D.appeared from A to W
