单项选择题
哈尔滨某宾馆,通气立管因故无法伸顶通气,采用在室内汇合成一根总管后再伸出屋面通气,如下图所示。排水管采用机制铸铁排水管。汇合通气管②最小管径为下列哪项?()
A.DN125B.DN150C.DN200D.DN250
A.280.5m3/d;29.22m3/hB.313.5m3/d;32.66m3/hC.330.00m3/d;34.38m3/hD.313.5m3/d;40.80m3/h
A.2B.3C.4D.5
A.0.10B.0.09C.0.07D.0.05
A.120B.180C.219D.328
A.15B.25C.30D.40
A.Hb=40.55m,Q=3.44L/sB.Hb=37.05m,Q=3.44L/sC.Hb=37.05m,Q=3.95L/sD.Hb=27.05m,Q=3.44L/s
A.Q1=0.71L/s、Q2=0.50L/sB.Q1=0.40L/s、Q2=0.40L/sC.Q1=0.71L/s、Q2=0.20L/sD.Q1=0.40L/s、Q2=0.20L/s
A.V=6072m3,SRT=32dB.V=6072m3,SRT=73dC.V=6667m3,SRT=32dD.V=6667m3,SRT=73d
A.487B.661C.851D.1241