The article tries to argue from the angle of distrust that we should build up a new limited trust mechanism and emphasize reasonable distrust while establishing necessary trust.

Comparison On Limited Liability Legal System;

Analysis about the validity of transfering limited liability companies shares;

Company system with limited responsibility as the representative is one of the most rational forms of modern enterprise organization.

Social security is not equal to government s guarantee, government only takes limited responsibility in conformity with its financial burden ability and social security nature; social security is not enterprise s guarantee, enterprise only takes limited responsibility of paying social security fee for its staff to the social security organization; person who receives guarantee not only benefits f.

From the view of sociology,bankruptcy discharge is a legal affirmation of basic human rights;from a legal point of view,bankruptcy discharge could be viewed as a path for individuals to take limited responsibility;from the view of economics,bankruptcy discharge system brings more benefit to the whole society than it costs.

In this paper,a scheme of authenticated key management in MANET based on valves of trust is proposed.