Songbbbb提出了问题
2020-03-09 18:46
代码如下：documentclass[twoside]{article}usepackage{picins}usepackage{psfig,epsfig,amssymb,vatola}usepackage{multicol}usepackage{graphicx}usepackage{amssymb}%usepackage{bm}%usepackage{amsmath}%usepackage{C...