A.0.3~0.6mg/L
B.0.7~1.0mg/L
C.1.1~1.4mg/L
D.1.5~0.8mg/L
E.1.9~2.2mg/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
[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/LD.0.5~1.0mg/LE.0.1~0
[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/LD.0.5~1.0mg/LE.0.1~
[单选题]饮水氟化预防龋病的适宜浓度是A.0.1~0.3mg/LB.0.4~0.6mg/LC.0.7~1.0mg/LD.1.1~1.3mg/LE.1.4~1.6mg/L
[单选题]饮水的适宜氟浓度一般保持A.0.4~0.7mg/LB.0.5~1.0mg/LC.0.6~0.9mg/LD.0.7~1mg/LE.0.8~1.5mg/L
[单选题]饮水的适宜氟浓度一般保持A.0.4~0.7mg/LB.0.5~1.0mg/LC.0.6~0.9mg/LD.0.7~1mg/LE.0.8~1.5mg/L
[单选题]某社区准备进行饮水加氟防龋措施。资料显示该地区饮水氟浓度为0.1~0.3mg/kg,氟牙症指数低于0.6。经过仔细论证以后。专家小组认为还应该补充考虑的指标是A.12岁儿童龋均B.6岁儿童龋均C.15岁龋均D.18岁龋均E.35~ 44岁组龋均
[单选题]适宜的饮水氟浓度为A.低于0.4mg/LB.0.4~0.7mg/LC.0.7~1.0mg/LD.1.2~1.5mg/LE.1.5~2.0mg/L