The obstacle, which obstructs vision but not chanining, is a
A) river
B) pond
C) hill
D) all of these
Correct Answer:
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Q12: The angle between the back tangent and
Q13: The lines passing through points at which
Q14: A plumb bob is required
A)when measuring distances
Q15: The ratio of the focal length of
Q16: The levelling should always commence from a
Q18: In plane surveying,
A)The curvature of the earth
Q19: Chain surveying is most suitable when
A)area to
Q20: The lines of earth's magnetic field run
Q21: The representative fraction 1 / 250° means
Q22: In a field book, the booking is
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