求眼镜F=＋4.00D.S.的光学中心上方3mm处具有的三棱镜度是（）。三棱镜的底部朝（）。

A．To achieve a state of deep relaxation is possible through various means.B．Sitting in an armchair can reflect one's character.C．Sitting in an armchair benefits a person just as meditation does.D．What people are all struggling for is a state of deep relaxation. 点击查看答案

在1米的距离检影，当镜片加到—3.25时为中和点，眼的屈光度应为（）。 点击查看答案