论述了不完全合约的性质、经济含义和产生原因，并分析了产权交易与流动以及产权效率的最优配置问题。
Discussed implication of the property of not complete agreement, economy and generation matter, analysed property right to trade the best configuration problem with flow and property right efficiency.
提出问题是为了解决问题，在分析了存在的问题及产生原因后，如何解决问题是最重要的。
Questions in order to solve the problem, the analysis of problems and causes, how to solve the problem is the most important.
本文通过对乌海市初中生美术学习评价现状的调查与分析，寻找其中存在的问题及产生的原因。
Based on Wuhai City Junior students art Learning Evaluation Survey and Analysis of the status, which exists to find the problems and the cause.
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