A.1 B.2 C.3 D.4
A.注水器加藥裝置 B.水箱加藥裝置 C.壓力式加藥裝置 D.容器式加藥裝置
A.仍按原先排污方法進(jìn)行排污 B.調(diào)整定期排污法閥開(kāi)啟的時(shí)間 C.調(diào)整定期排污閥開(kāi)啟的次數(shù) D.大開(kāi)排污閥連續(xù)排污