latex插入图片bug：Undefined control sequence. \includegraphics加上\usepackage{graphicx}即可版权声明：本文为weixin_43085694原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接和本声明。原文链接：https://blog.csdn.net/weixin_43085694/article/details/104249951