(来学网)临床上常用利多卡因进行表面麻醉的浓度是
  • A.
    (来学网)0.25%~1%
  • B.
    (来学网)0.5~1%
  • C.
    (来学网)0.5%
  • D.
    (来学网)1%
  • E.
    (来学网)2%~5%