Surveying
The main object of the astronomer to obtain

All of these
Astronomical latitude
Astronomical longitude
Astronomical bearing

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Surveying
Refraction correction

adds to the curvature correction
completely eliminates curvature correction
has no effect on curvature correction
partially eliminates curvature correction

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Surveying
For mapping any country

Secondary triangles are further broken into third and fourth order triangles, the points of which are used for detail surveys
All listed here
Primary triangles are broken down into secondary triangles of somewhat lesser accuracy
Geodetic triangulation of greatest possible sides and accuracy is carried out

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Surveying
Transit rule of adjusting the consecutive coordinates of a traverse is used where

All of these
linear measurements are more accurate than angular measurements
linear and angular measurements of the traverse are of equal accuracy
angular measurements are more accurate than linear measurements

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