Surveying
The parallax of a point on the photograph is due to

Ground elevation
Length of air base
Flying height
All listed here

ANSWER DOWNLOAD EXAMIANS APP

Surveying
The length of a chain is measured from

outside of one handle to inside of other handle
centre of one handle to centre of other handle
inside of one handle to inside of other handle
outside of one handle to outside of other handle

ANSWER DOWNLOAD EXAMIANS APP