MCQOPTIONS
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| 1. |
weight of water, the hydraulic mean depth of the sewer and the bed slope w is the unit of the sewer, then the tractive force exerted by flowing water, is________________________? |
| A. | w r S S |
| B. | w r1/2 |
| C. | w r S |
| D. | w r2/3 |
| Answer» B. w r1/2 | |