Surveying
The rise and fall method

quicker and less tedious for large number of intermediate sights
provides a check on the reduction of intermediate point levels
is not suitable for levelling with tilting levels
is less accurate than height of instrument method

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Refraction correction

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

ANSWER DOWNLOAD EXAMIANS APP