(来学网)医用中频电流的频率范围是
  • A.
    (来学网)100~1000Hz
  • B.
    (来学网)1000~2000Hz
  • C.
    (来学网)1000~100000Hz
  • D.
    (来学网)2000~100000Hz
  • E.
    (来学网)2000~1000000Hz