【单选题】Which of the following are purposes of a budget? i. Establishing strategic options ii. Motivating management iii. Establishing long term objectives iv. Planning operations
【简答题】设:屈光处方为 R : -2.0-1.00×180/L : -4.50-1.00×180 ,镜眼距为 15.049mm 。 问:如何进行等像眼镜的验配?设:等像眼镜的倍率参数 Ma 为 1.037, 中心厚度 t 为 5 mm , 折射率 n 为 1.499 ,镜片的总焦度 D 为 -5.00 D 。求:设计镜片的前面焦度 D 1 和曲率半径 r 1 , 后面焦度 D 2 和曲率半径 r 2 。
【单选题】Which of the following are purposes of a budget? (i) establishing strategic options (ii) motivating management (iii) establishing long term objectives (iv) planning operations