15 測量對比敏感度時,那兩項指標會出現在測試設備上?
(A)空間頻率及視覺對比閾值(spatial frequency and contrast threshold)
(B)視力及空間頻率(visual acuity and spatial frequency)
(C)視覺對比閾值及對比敏感度(contrast threshold and contrast sensitivity)
(D)視力及重點列印大小(visual acuity and critical print size)

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統計: A(210), B(12), C(89), D(3), E(0) #3286924