(来学网)机房湿度应常年维持在
  • A.
    (来学网)10%~20%
  • B.
    (来学网)20%~30%
  • C.
    (来学网)30%~40%
  • D.
    (来学网)40%~60%
  • E.
    (来学网)60%~80%