Surveying
The station which is selected close to the main triangulation station, to avoid intervening obstruction, is not known as

Satellite station
Eccentric station
Pivot station
False station

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Surveying
Refraction correction

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

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Surveying
Sidereal day

Is the period of time taken by the earth in making a complete rotation with reference to stars
Is divided into the conventional hours, minutes and seconds
Is slightly shorter than an ordinary solar day
All listed here

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