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题目倾斜的雪道长为25m,顶端高15m,下端经过一小段圆弧过渡后与很长的水平雪道相接,如图1所示.一滑雪运动员在
The slope of the slope of the subject is 25m in length and 15m in height, and the lower end is connected to a long horizontal road after a small arc of transition, as shown in Figure 1. A skier is