Hello all,
Suggested by Werner Lemberg to post my problem here. I hereby paste my work
here, in which the \date{}, \begin{abstract} and \chapter{} have problems
with one another. pdflatex stops and says "Invalid character code". Will
somebody please tell me why and what are the possible solutions. I really
appreciate any comment.
\documentclass{report}
\usepackage{geometry}
\usepackage{graphicx}
\usepackage{CJK}
\usepackage[urlbordercolor={1 1 1}]{hyperref}
\begin{CJK*}{GB}{gbsn}
\title{基于~CompactLogix~的液位控制系统设计}
\author{刘耘夏\\东南大学自动控制系\\南京}
%\date{二〇〇六年六月}
\end{CJK*}
\begin{document}
\begin{CJK*}{GB}{gbsn}
\maketitle
\end{CJK*}
\begin{abstract}
\begin{CJK*}{GB}{gbsn}
液位过程是过程控制中一类常见的被控过程。本文通过数学模型仿真和实际系统的参数整定和调试,研究了单回路控制系统和串级控制系统对一个液位对象控制效
果,得出了两者的不同特性。
\end{CJK*}
\end{abstract}
%\begin{CJK*}{GB}{gbsn}
%\chapter{绪论}
%\end{CJK*}
\end{document}
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