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Surveying

Surveying
The normal longitudinal overlap is generally kept

0.5
0.75
0.7
0.6

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Surveying
At the first point of Aeries, the sun moves

From north to south of the equator
Southward
From south to north of the equator
Northward

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Surveying
The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is

B = bH/f
B = H/bf
B = b/fH
B =f/bH

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Surveying
If the staff is not held vertical at a level¬ling station, the reduced level calculated from the observation would be

less than true R.L.
None of these
more than true R.L.
true R.L.

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Surveying
The nautical mile is the length of

1 degree of longitude
1 degree of latitude
1 minute of latitude
1 minute of longitude

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Surveying
The latitude of the observer's position, is

Angular distance along the observer's meridian between equator and the observer
Declination of the observer's zenith
All listed here
Elevation of the elevated pole

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