问题 单项选择题

某水厂3班制工作,产水量为24×104m3/d,输水管漏损水量、沉淀池排泥水量和滤池冲洗排水量分别按最高日流量的6%、2%和3%考虑,管网中无水塔,最高日内用户的每小时用水量(m3)见表1-2,则取水泵房设计流量为( ),管网设计流量为( )。 表1-2
时 间 0~1 1~2 2~3 3~4 4~5 5~6 6~7 7~8 8~9 9~10 10~11 11~12 用水量 6000 4000 3000 3000 5000 10000 12000 12000 11000 9000 12000 14000 时 间 12~13 13~14 14~15 15~16 1 6~17 17~18 18~19 19~20 20~21 21~22 22~23 23~24 用水量 14000 11000 9000 8000 13000 14000 15000 14000 12000 11000 10000 8000

A.10500m3/h;11100m3/h
B.11100m3/h;15000m3/h
C.10600m3/h;11100m3/h
D.11100m3/h;10000m3/h

答案

参考答案:B

解析:输水距离较远时,需考虑输水过程的漏损水量,故取水泵房设计流量为最高日设计用水量加上输水管线损失及水厂自用水量1.11×240000÷24=11100m3/h。管网设计流量为最高时用水量,即18~19时的用水量15000m3/h。

完形填空
It was a cloudy Saturday afternoon. A group of birds were having a great time        food and playing on the main road. All of a sudden, a big truck sped through.  A        thing happened. Birds could       , too. Although this bird had already     , another bird flew over to her immediately, just like a family member, unable to accept the     .
Not long after that, another car passed by quickly,      the dead bird’s body to whirl(旋转) with the wind. The male bird       the movement. As if she was still alive, he        flew beside her again. He stared at her as if he was asking, “       are you not getting up?”
      , she was no longer able to hear him. At the same time, he was trying to lift her up. He,      , was unable to bear the burden. Another car soon passed by. He quickly        . Once the car had gone, he came down again.
Although other birds told him that it was       , he never gave up. He was trying his best to         her up. Another car passed by, and her dead body whirled again as if she was still alive and trying to       . He had used all of his energy, but he was too weak.
小题1:
A.packing up B.caring for C.searching for D.setting down
小题2:
A.strange B.normalC.funnyD.sad
小题3:
A.disagreeB.feelC.flyD.spread
小题4:
A.disappeared B.droppedC.died D.escaped
小题5:
A.storyB.truthC.giftD.past
小题6:
A.shakingB.holdingC.sendingD.causing
小题7:
A.stoppedB.disturbedC.noticed D.feared
小题8:
A.worriedlyB.quicklyC.bravelyD.surprisingly
小题9:
A.WhereB.WhenC.HowD.Why
小题10:
A.UnluckilyB.SlowlyC.Finally D.Directly
小题11:
A.in needB.of courseC.by accidentD.on purpose
小题12:
A.sat downB.looked upC.showed upD.flew off
小题13:
A.simpleB.boringC.uselessD.important
小题14:
A.liftB.keepC.catchD.put
小题15:
A.jumpB.danceC.sing D.Fly
单项选择题 案例分析题