(来学网)配制中性福尔马林固定液的pH是
  • A.
    (来学网)6.9~7.0
  • B.
    (来学网)7.0~7.4
  • C.
    (来学网)7.2~7.4
  • D.
    (来学网)7.4~7.6
  • E.
    (来学网)7.6~7.8
正确答案:
B