(来学网)痰标本的预处理一般采用的物质是
  • A.
    (来学网)4%NaOH
  • B.
    (来学网)10%HCl
  • C.
    (来学网)0.9%NaCl
  • D.
    (来学网)14g/L柠檬酸钠
  • E.
    (来学网)40g/LNaOH