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				| 1. | The ratio between hydraulic radius and hydraulic depth of a triangular channel is 31/100, calculate the side slope of the channel. | 
| A. | 1 2 | 
| B. | 1 3 | 
| C. | 1 4 | 
| D. | 2 3 | 
| Answer» C. 1 4 | |