(来学网)观察影像时,人眼的模糊阈值定为
  • A.
    (来学网)0.01mm
  • B.
    (来学网)0.02mm
  • C.
    (来学网)0.10mm
  • D.
    (来学网)0.20mm
  • E.
    (来学网)1.00mm