The normal range of velocity of water in pipes is _______________ m/sec?
A. 0.1-0.5
B. 1-2
C. 10-50
D. 15-30
The normal range of velocity of water in pipes is _______________ m/sec?
A. 0.1-0.5
B. 1-2
C. 10-50
D. 15-30