(来学网)人耳能感觉到的声频范围是
  • A.
    (来学网)<20Hz
  • B.
    (来学网)>20000Hz
  • C.
    (来学网)20~20000Hz
  • D.
    (来学网)200~2000Hz
  • E.
    (来学网)>2000Hz