第1题:
A.aeration tanks
B.settling tanks
C.disinfection agent(消毒剂
D.anaerobic bacteria(厌氧菌)
第2题:
第3题:
A、believed
B、bewildered
C、convinced
D、argued
第4题:
氯化消毒副产物(chorinated disinfection by-producls)
第5题:
第6题:
Most marine biological sewage treatment plants consist of all the following statements except ______.
A.aeration(通风) tanks
B.settling tanks
C.disinfection agent(消毒剂)
D.anaerobic bacteria(厌氧菌)
第7题:
第8题:
The disinfection of various compartments in a vessel by filling with a gaseous agent to destroy rats and all insects pests which act as germ carriers means ______.
A.fumigation
B.discharging
C.Compensation
D.displacement
第9题:
第10题:
消毒(disinfection)