单项选择题
A.120升B.160升C.180升D.210升
反渗透水电导度单位是:()A.mg/cmB.μs/cmC.ms/cmD.μg/cm
单项选择题反渗透水电导度单位是:()
A.mg/cmB.μs/cmC.ms/cmD.μg/cm
活性炭罐出水氯胺含量不能超过:()A.0.1mg/lB.0.5mg/lC.1mg/lD.2mg/l
单项选择题活性炭罐出水氯胺含量不能超过:()
A.0.1mg/lB.0.5mg/lC.1mg/lD.2mg/l
软化水总硬度AAMI推荐数值小于:()A.15ppmB.17.2ppmC.21ppmD.19ppm
单项选择题软化水总硬度AAMI推荐数值小于:()
A.15ppmB.17.2ppmC.21ppmD.19ppm