(来学网)过氧化氢溶液作为牙周冲洗液的浓度为
  • A.
    (来学网)0.5%
  • B.
    (来学网)1.0%
  • C.
    (来学网)1.5%
  • D.
    (来学网)2.0%
  • E.
    (来学网)3.0%