(来学网)阴道正常情况下pH维持在
  • A.
    (来学网)3~3.5
  • B.
    (来学网)4~4.5
  • C.
    (来学网)5~5.5
  • D.
    (来学网)6~6.5
  • E.
    (来学网)7~7.5
正确答案:
B