单项选择题
A.0°~20° B.0°~10° C.0° D.0°~15°
A.VD B.PD C.RD D.LD
A.左眼瞳距为30mm B.右眼瞳距为30mm C.左眼瞳高为30mm D.右眼瞳高为30mm
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