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1. |
The_hydraulic_radius_of_a_circular_channel_section_is_0.33m,_calculate_the_radius_of_the_channel_if_the_central_angle_is_60°.$# |
A. | 2m |
B. | 3m |
C. | 4m |
D. | 5m |
Answer» D. 5m | |