我正在使用定理环境来区分作为家庭作业分配的不同练习。所以我的计划是编写 exe 的描述，将几行移到下面，然后给出我的解决方案。我正在使用\vspace{3cm}但它不起作用。我的代码是
\documentclass[a4paper,11pt]{article}
\usepackage[english,greek]{babel}
\usepackage[iso-8859-7]{inputenc}
\setcounter{secnumdepth}{3}
\usepackage{kerkis}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsfonts}
\usepackage{amsthm}
\usepackage{resizegather}%allows the automatically resizing of equation to line width, if equation is too large
\usepackage{units}
\usepackage{array}
\usepackage{framed}
\usepackage{extarrows}
\usepackage{cancel}
\usepackage[pdftex]{graphicx}
\usepackage[margin=2.8cm]{geometry}
\linespread{1}
\newcommand{\sw}{\selectlanguage{english}}
\newcommand{\sq}{\selectlanguage{greek}}
\newcommand{\eng}[1]{\latintext#1\greektext}
\newcommand{\gre}[1]{\greektext\latintext#1}
\theoremstyle{definition}
\newtheorem{exe}{Άσκηση}
\begin{document}
\begin{exe}
\sw
Prove \textit{Thomson's theorem}: If a number of surfaces are fixed in position and a given total charge is placed on each surface, then the electrostatic energy in the region bounded by the surfaces is an absolute minimum when the charges are placed so that every surface is an equipotential, as happens when they are conductors.\\ \sq
\vspace{3cm}
\noindent \textbf{Λύση:}μπλα μπλα μπλα
\end{exe}
\end{document}
答案1
由于没有其他人发布解决方案，我假设没有其他命令允许设置该间距。因此，\par在 之前添加一个\vspace：
\par\vspace{3cm}
将添加所需的垂直空间。