试题详情

某污水管段采用D500mm钢筋混凝土管(n=0.014),管底坡度为0.002,水力半径为0.12m,则该污水管内污水流速v为下列哪项?( )

Av=1.08m/s

Bv=1.26m/s

Cv=0.7m/s

Dv=0.78m/s