(来学网)饮水氟化预防龋病的适宜氟浓度是
  • A.
    (来学网)0.1~0.3mg/L
  • B.
    (来学网)0.4~0.6mg/L
  • C.
    (来学网)0.7~1.0mg/L
  • D.
    (来学网)1.1~1.3mg/L
  • E.
    (来学网)1.4~1.6mg/L
口腔预防医学