(来学网)一般人眼能识别的密度值范围是
  • A.
    (来学网)0.1~0.2
  • B.
    (来学网)0.25~2.0
  • C.
    (来学网)0.2~0.7
  • D.
    (来学网)1.0~3.1
  • E.
    (来学网)0.4~0.9