运行此程序，插入优盘。将计算机指定目录下文件（本程序目前通过代码静态指定目录，稍加修改程序可以实现用对话框动态指定）拷贝到U盘当中，并且拷贝完成后删除。-Run this program, insert the flash drive. The computer files under the specified directory (the program currently specified by the static code directory, slightly modified p