单项选择题
A.+1.00~+1.50B.+1.50~+2.00C.+2.00~+2.50D.+2.50~+3.00
A.单眼12cpm 双眼8cpmB.单眼8cpm 双眼12cpmC.单眼24cpm 双眼16cpmD.单眼16cpm 双眼24cpm
A.-0.25~-0.75B.+0.25~+0.75C.+0.25~-0.75D.-0.25~+0.75