A.450mg/L
B.350mg/L
C.250mg/L
D.500mg/L
E.400mg/L
[单选题]我国生活饮用水卫生标准中规定硬度不超过A.450m9£¯LB.350m9£¯LC.250m9£¯LSXB我国生活饮用水卫生标准中规定硬度不超过A.450m9/LB.350m9/LC.250m9/LD.500rn9/LE.400m9/L
[单选题]我国生活饮用水卫生标准中规定硬度不超过( )。A.450mg/LB.350mg/LC.250mg/LD.500mg/LE.400mg/L
[单选题]我国《生活饮用水卫生标准》中规定,细菌总数不超过A.100cfu/mlB.3cfu/mlC.100cfu/3mlD.3cfu/mlE.100cfu/L
[单选题]我国《生活饮用水卫生标准》中规定,细菌总数不超过A.100cfu/mlB.3cfu/mlC.100cfu/3mlD.3cfu/mlE.100cfu/L
[单选题]我国《生活饮用水卫生标准》中规定,细菌总数不超过A.100cfu/mlB.100cfu/3mlC.3cfu/mlD.3cfu/LE.100cfu/L
[单选题]我国《生活饮用水卫生标准》中规定,细菌总数不超过A.100cfu/mlB.100cfu/3mlC.3cfu/mlD.3cfu/LE.100cfu/L
[单选题]我国《生活饮用水卫生标准》中规定,总大肠菌群不超过A.100efu/mlB.100cfu/3mlC.3cfu/mlD.3cfu/LE.100cfu/L
[单选题]我国《生活饮用水卫生标准》中规定,总大肠菌群不超过A.100cfu/mlB.100cfu/3mlC.3cfu/mlD.3cfu/LE.100cfu/L
[单选题]我国《生活饮用水卫生标准》中规定饮用水的浑浊度不能超过()A .1度B .2度C .5度D .7度
[单选题]我国《生活饮用水卫生标准》规定汞浓度不得超过A.0.001mg/LB.0.02mg/LC.0.05mg/LD.0.01mg/LE.0.15mg/L