(来学网)18-8铬镍不锈钢中铬的含量为
  • A.
    (来学网)17%~19%
  • B.
    (来学网)9%~16%
  • C.
    (来学网)8%~12%
  • D.
    (来学网)7%~9%
  • E.
    (来学网)27%~29%