Which of the following spillways is least suitable for an earthen dam ?

A. boarder flooding
B. check flooding
C. furrow flooding
D. free flooding

A. methyl alcohol
B. ethyl alcohol
C. cetyl alcohol
D. butyl alcohol

A. (0.99)10
B. 1 – (0.99)10
C. (0.9)’00
D. l-(0.9)100

A. 1 + (0.9)010
B. 1 – (0.9)°l0
C. 1/(1-0.9°10)
D. 1/(1+ 0.9010)

A. main canal
B. branch canal
C. watercourse
D. distributory

A. design speed
B. rated speed
C. gross speed
D. operating speed