A.0.3~0.5mg/LB.0.5~1.0mg/LC.2~3mg/LD.4~6mg/L
A.無氧呼吸B.發(fā)酵C.缺氧呼吸D.好氧呼吸
A.壓力溶氣系統(tǒng)B.空氣釋放系統(tǒng)C.氣浮池D.溶氣罐