(来学网)人眼能分辨的模糊阈值是
  • A.
    (来学网)0.lmm
  • B.
    (来学网)0.2mm
  • C.
    (来学网)0.3mm
  • D.
    (来学网)0.15mm
  • E.
    (来学网)0.25mm