题目

Another milestone has been passed in the adoption of 3D printing. Daihatsu，a daughter company of Toyota，announced that it would begin offering car buyers the opportunity to customize（订制）their vehicles with 3D-printed pars. This brings to drivers with more modest budgets the kind of individual tailoring of vehicles，which is restricted to the luxury cars and sports cars of the super-rich.The service is available. only to buyers of the Daihatsu Copen，a tiny changeable two-seater. Customers ordering this car from their local dealer can choose one of 15 effect skins. The buyers can 根据程序设定，机器人在平面上能完成下列动作：先从原点O沿正东偏北α（）方向行走一段时间后，再向正北方向行走一段时间，但α的大小以及何时改变方向不定．如图．假定机器人行走速度为10米/分钟，设机器人行走2分钟时的可能落点区域为S，则S的面积（单位：平方米）等于（ ）A．100πB．100π-200C．400-100πD．200