1.

The average drainage path for the pressure increment is calculated from the formula of ______

A. (d= frac{1}{2} left[ frac{H_{ }-H_f}{2} right] )
B. (d= frac{1}{2} left[ frac{H_{ }}{2} right] )
C. (d= frac{1}{2} left[ frac{H_{ }-H_f}{4} right] )
D. (d= frac{1}{2} left[ frac{H_f-H_{ }^{ }}{2} right] )
Answer» B. (d= frac{1}{2} left[ frac{H_{ }}{2} right] )


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