说明：  设计一个易于理解的界面，动态显示各梯的载客与运行情况(上、下或停止)，动态显示各楼层的人员停留情况与要求乘梯情况；动态显示从仿真开始到目前的时间。
(To design a easy-to-understand interface, dynamic display of the ladder with the operation of the passenger (on, under or stopped), dynamic display on each floor of the staff remain with the requirements of the situation by ladder dynamic display from the beginning to the current simulation time.)