The main content of the paper comprises:(1) The basic theory analysis supporting the evolution of Mass Emergency and the constructing research of the emergency preplan.
论文内容主要包括：（1）支撑突发群体事件演化和应对预案构建研究的基础理论分析。
The first chapter is about the significant of the research, introduction for the basic theory of hedging, frame of the paper and main content.
第二章对期货套期保值的研究现状进行了集中阐述，并对现有研究的不足进行了重点分析。
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