(来学网)用过氧化氢液进行口腔和咽部消毒,其浓度为
  • A.
    (来学网)0.05%
  • B.
    (来学网)0.1%
  • C.
    (来学网)0.5%
  • D.
    (来学网)1
  • E.
    (来学网)2%