1.

​What is the variation in duty of water from the head of a main canal (M) to that in the field (F)?

A. ​Duty of water at M is always greater than duty of water at F
B. ​Duty of water at M is always less than duty of water at F
C. Duty of water at M is always equal to duty of water at F
D. Duty of water at M can be greater or less than duty of water at F
Answer» C. Duty of water at M is always equal to duty of water at F


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