\documentclass[a4paper,12pt,titlepage,oneside]{ctexbook}
\usepackage[utf8]{inputenc}
\usepackage{graphics,physics}
\usepackage{subfigure,mhchem}
\usepackage[graphicx]{realboxes}
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\usepackage{ctexcap,indentfirst,booktabs}
\usepackage{amsmath,amssymb,amsfonts}
\usepackage{autobreak,geometry,subcaption}
\geometry{left=25mm,right=20mm,top=25mm,bottom=25mm}
\makeatletter
\newcommand{\rmnum}[1]{\romannumeral #1}
\newcommand{\Rmnum}[1]{\expandafter\@slowromancap\romannumeral #1@}
\makeatother
\usepackage{fancyhdr}
\fancypagestyle{plain}%
\fancyhf{} % 清空当前设置
% 设置页眉 (head)
\fancyhead[LO,LE]{CNAO复习资料第十六版}
\fancyfoot[RO,RE]{使持节都督天文奥赛复习充电站诸军事 撰}
\renewcommand{\headrulewidth}{0.5pt} % 页眉与正文之间的水平线粗细
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\pagestyle{fancy} % 选用 fancy style
\usepackage{tikz,xcolor,eso-pic}
\usepackage{tabularx, makecell, multirow}

\usepackage[center]{titlesec}%chapter1修改为第1章
\titleformat{\chapter}{\raggedright\Huge\bfseries}{第\,\thechapter\,章}{1em}{}
\titleformat{\section}{\raggedright\Large\bfseries}{\,\thesection\,}{1em}{}
\titleformat{\subsection}{\raggedright\large\bfseries}{\,\thesubsection\,}{1em}{}



\begin{document}

\author{开府仪同三司 \ 使持节都督CNAO复习充电站诸军事 \ 李轩辕 \ 撰}
\title{CNAO复习资料第十六版}
\date{2023年2月4日}
\frontmatter
\maketitle
\tableofcontents

\mainmatter
\include{./TeX_files/chapter01}
\include{./TeX_files/chapter02}
\include{./TeX_files/chapter03}
\include{./TeX_files/chapter04}


\backmatter
% bibliography, glossary and index would go here.

\end{document}