The theory of modern political economy in China holds that the profit under the socialist system is the form of the value of the surplus products created by the workers for the society. The value composition of the product is c+v+m,c+v is converted into production cost, and the m is part of the surplus product created by the laborer for the society, which translates into profit for the enterprise. The specific form of socialist profit is: to realize profit, that is, the balance of the sales revenue of the enterprise minus the expenses of various expenses; To pay the profits in accordance with the provisions to the national financial department; After tax profit, that is, the profit of the enterprise shall be returned to the enterprise in accordance with the state provisions. Any trucking company features a fleet of trailers that enable the loads to be transported into storage yards and pipeline right of how around the country safely, especially rental equipment. The specialized hauling is always performed by very experienced drivers who make use of a lot of knowledge about hazardous loads. Almost all the drivers usually have a lot more than 10 years' experience as well as a considerable percentage have tenure exceeding 2 decades. Extreme sports is a multi-form sport project and game, life and work evolution, participation in the youth dominated by the high difficulty spectator sports. In the process of integration with nature, human beings, with the help of modern high-tech means, maximize their self-physical and mental potential and play an entertainment sport that challenges themselves. It except pursue athletics sports superego physiological limit "higher, faster, stronger" outside the spirit, more emphasis on participation, entertainment and brave spirit, pursue when surmounts psychological barrier obtain pleasure and a sense of achievement, at the same time, it also embodies the human nature, return to nature, to protect the environment of good will, so has been the world known as "the future sports". Comics that comply with the code can be offered "sales license". However, the code did not succeed, and publishers of small size ignored it. Some publishers, such as dell comics, have simply refused to join the group. Others, such as the founding member, education comics, also terminated their partnership with them. Some of the remaining members, without a formal review, use the magazine publishers association's sales license directly. In 1950, executive director schultz described it as "the only thing I can say to this association is that it's gone bankrupt, and it's a dead end." However, over the next few years, comics continued to use the magazine publishers association's sales license.