In this paper we consider four problems on optimal regulation policy under asymmetric information: optimal transfers and effort levels between government and companies, optimal contracts of environmental subsidies, optimal regulation contracts of public goods, optimal environmental regulation policy.

As a type of learning strategy, monitoring strategy has important significance in language acquisition.

Power quality mitigation level and management policy in domestic and foreign electric utilities;

The authors point out the teacher in charge should take relevant management policy pertinent to the feature,like making full use of and exerting student s activeness,performance of humanism management by reasonably using affections and rights,solving their problems while persisting in rules and regulations,which is sure to guarantee.