饮水加氟时适宜的氟浓度一般为A.0.3~0.6mg/LB.0.7~1.0mg/LC.1.2~1.4mg/LD.1.5~1.8mg/lE.2.0~2.2mg/L
饮水加氟时适宜的氟浓度一般为
A.0.3~0.6mg/L
B.0.7~1.0mg/L
C.1.2~1.4mg/L
D.1.5~1.8mg/l
E.2.0~2.2mg/L
相关考题:
牙防指导组派出一科研小组到某氟牙症流行地区调查流行状况及其影响因素。根据研究计划,他们进行了以下工作调查当地饮水氟含量为适宜浓度A.0.7~1mg/LB.0.5~1.0mg/LC.1.0~1.5mg/LD.1.5~2.0mg/LE.2.0~3.0mg/L
饮水氟化预防龋病的适宜氟浓度是A.0.1~0.3mg/L B.0.4~0.6mg/L C.0.7~1.0mg/L D.1.1~1.3mg/L E.1.4~1.6mg/L