单项选择题
Bacteria which live are said to be aerobic（）
A.in the presence of oxygen
B.without oxygen
C.in the presence of nutrition
D.without nutrition
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相关考题
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单项选择题
It is that reduce the BOD by converting the organic content of the sewage to a chemically and organically inert sludge（）
A.the bacteria
B.oxygen
C.oxidizing function
D.agitation function -
单项选择题
The basic process of biological sewage treatment consists of the liquor either by bubbling air through it or by agitating the surface（）
A.oxygenating
B.oxidizing
C.deoxygenating
D.proportioning -
单项选择题
When the garbage is mixed with some discharges having different disposal or discharge requirements, shall apply（）
A.any requirement appointed by the Officer
B.the most suitable requirement
C.the most stringent requirement
D.no requirement
