1.

The diameter of a circular sewer is 0.8m. The desired depth of flow is __________

A. 2/3 of the circular section of sewer
B. 1/3 of the circular section of sewer
C. 1/2 of the circular section of sewer
D. 1/4 of the circular section of sewer
Answer» B. 1/3 of the circular section of sewer


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