(来学网)福尔马林液的甲醛含量为
  • A.
    (来学网)28%~33%(W/W)
  • B.
    (来学网)34%~38%(W/W)
  • C.
    (来学网)34%~38%(W/V)
  • D.
    (来学网)40%~45%(W/W)
  • E.
    (来学网)40%~45%(W/V)