(来学网)正常血液pH保持在
  • A.
    (来学网)5.35~6.45
  • B.
    (来学网)6.35~7.45
  • C.
    (来学网)7.35~7.45
  • D.
    (来学网)7.35~8.45
  • E.
    (来学网)8.35~8.45