Surveying
To have greatest coverage of the area, the type of photography used, is

Low oblique
High oblique
Vertical
None of these

ANSWER DOWNLOAD EXAMIANS APP

Surveying
The error due to eccentricity of inner and outer axes can be eliminated by

double sighting
taking mean of several readings distributed over different portions of the graduated circle
taking both face observations and taking the mean of the two
reading both verniers and taking the mean of the two

ANSWER DOWNLOAD EXAMIANS APP