单项选择题
A.+6.00D B.+5.75D C.+6.25D D.+3.50D
A.-3.00DS B.-4.50DS C.-4.00DS D.-4.25DS
A.8.10mm B.8.50mm C.8.90mm D.9.30mm
A.8.1mm B.8.4mm C.8.6mm D.9.3mm
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