The intervals for levelling work in rolling terrain are taken as ______
A. 50m
B. 30 m
C. 45 m
D. 40 m
Answer:A
The intervals for levelling work in rolling terrain are taken as ______
A. 50m B. 30 m C. 45 m D. 40 m
Explanation: In the rolling terrain the interval is considered as 50m and in hilly terrain is taken as 30m.