(来学网)CT机房的相对湿度应保持在
  • A.
    (来学网)50%~90%
  • B.
    (来学网)40%~50%
  • C.
    (来学网)30%~85%
  • D.
    (来学网)10%~50%
  • E.
    (来学网)10%~20%
正确答案:
B