[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fhJ7rf3PLpkSiAOiIHjEA0ZgBY1pZpFB5Ylx4YXnGnds":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2023-09-16 18:54:39",97083337,[8,9,10,11],"30 min","40 min","50 min","60 min",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},21,"691bf43962a21d6f8d6ccd730174fe75","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F34afe9e40aa191cab52c0b11067d9140.jpg","2023-2024-1专业英语","c96b856ec0074c2da8e48a1c3e56f30e","","If the tank volume is 120 m³ and the flow rate is 2 m³\u002Fmin,how long is the retention time",[21,33,42,51,60,68,77,80,88,96],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2023-09-16 18:54:38",97083322,[26,27,28,29],"defensive organization","dissolved oxygen","depleted organism","domestic oxidization","DO means","v1",0,{"answer":34,"createTime":5,"id":35,"options":36,"question":41,"source":31,"type":32},[],97083328,[37,38,39,40],"a primary clarifier","an aeration tank","a final clarifier","a digesting tank","Microorganisms are separated from the liquid in( )",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":31,"type":32},[],97083329,[46,47,48,49],"The steel bars","The cleaning rakes","The flow meter","all of the above","()are activated when screens get sufficiently clogged to raise the water level in front of the bars",{"answer":52,"createTime":5,"id":53,"options":54,"question":59,"source":31,"type":32},[],97083332,[55,56,57,58],"nocuous","innocuous","feasible","favorably","As with coagulants,these aids should preferably be()",{"answer":61,"createTime":5,"id":62,"options":63,"question":67,"source":31,"type":32},[],97083335,[64,65,66,49],"The maintenance of proper pH","The continuous presence of trained operators","Proper flow rates","What are the Key factors in the successful operation of DAF units",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":31,"type":32},[],97083336,[72,73,74,75],"biological","chemical","physical","medical","Activated sludge is a step",{"answer":78,"createTime":5,"id":6,"options":79,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":81,"createTime":5,"id":82,"options":83,"question":87,"source":31,"type":32},[],97083338,[84,85,86,49],"domestic wastewater","infiltration","industrial discharge","Discharges into a sanitary sewerage system consist of ( )",{"answer":89,"createTime":5,"id":90,"options":91,"question":95,"source":31,"type":32},[],97083339,[92,93,94,49],"physical process","chemical process","biological process","Primary treatment is( )that remove nonhomogenizable solids and homogenize the remaining effluent",{"answer":97,"createTime":5,"id":98,"options":99,"question":104,"source":31,"type":32},[],97083341,[100,101,102,103],"suspended solids","grease particle","protein","phosphorus","Flotation is an operation that removes not only oil and grease but also( )"]