A.0.5mg/L以下
B.1mg/L以下
C.0.5~0.6mg/L
D.0.5~0.7mg/L
E.0.7~1mg/L
[单选题]饮水的适宜氟浓度应控制在()A . 0.5mg/L以下B . 1mg/L以下C . 0.5~0.6mg/LD . 0.5~0.7mg/LE . 0.7~1mg/L
[单选题]饮水的适宜氟浓度应控制在()A.0.5mg/L以下B.1mg/L以下C.0.5~0.6mg/LD.0.5~0.7mg/LE.0.7~1mg/L
[单选题]饮水的适宜氟浓度应控制在()A.0.5mg/L以下B.1mg/L以下C.0.5~0.6mg/LD.0.5~0.7mg/LE.0.7~1mg/L
[单选题]饮水的适宜氟浓度应控制在( )。A.0.5mg/L以下B.1mg/L以下C.0.5~0.6mg/LD.0.5~0.7mg/LE.0.7~1mg/L
[单选题]饮水的适宜氟浓度应控制在( )。A.0.5mg/L以下B.1mg/L以下C.0.5~0.6mg/LD.0.5~0.7mg/LE.0.7~1mg/L
[单选题]饮水的适宜氟浓度应控制在( )。A.0.5mg/L以下B.1mg/L以下C.0.5~0.6mg/LD.0.5~0.7mg/LE.0.7~1mg/L
[单选题]饮水的适宜氟浓度应控制在( )。A.0.5mg/L以下B.1mg/L以下C.0.5~0.6mg/LD.0.5~0.7mg/LE.0.7~1mg/L
[单选题]学校饮水氟化时,饮水氟浓度可以为饮水氟适宜浓度的()A . 相同浓度B . 2.5倍C . 4.5倍D . 5.5倍E . 6.5倍
[单选题]饮水的适宜氟浓度一般应保持在A.2.1~2.5mg/LB.1.6~2.0mg/LC.1.1~1.5mg/LD.0.5~1.0mg/LE.0.1~0.4mg/L
[单选题]饮水的适宜氟浓度一般应保持在A.2.1~2.5mg£¯LB.1.6~2.0mg£¯LC.1.1~1.5mg£¯LSX饮水的适宜氟浓度一般应保持在A.2.1~2.5mg/LB.1.6~2.0mg/LC.1.1~1.5mg/LD.0.5~1.0mg/LE.0.1~0.4mg/L