(来学网)正常情况下,唾液中氟的浓度为
  • A.
    (来学网)0.005mmol/L
  • B.
    (来学网)0.01mmol/L
  • C.
    (来学网)0.015mmol/L
  • D.
    (来学网)0.02mmol/L
  • E.
    (来学网)0.05mmol/L