某国际贸易中心共40层，设有载客电梯10部（用E0~E9标识）。利用多线程技术实现个电梯载客的仿真情况，另附上技术文档-An international trade center 40 layers, with passenger elevators 10 (with E0 ~ E9 logo). The use of multi-threading technology to achieve a passenger elevator simulation case, attached tech