These managerial accounting questions relate with effective cost assignment and optimal cash strategy tricks of a company enterprise-the appropriate mix of costs management strategies that maximizes the return on your investment and shareholders' wealth while minimizing the expense of operations, simultaneously. So now that it is the end of the year, it is a good time to reflect on what we have done to achieve these goals. Block chain can create a world in which all requirements were met, everyone can express their own points of view, we can take meaningful global cooperation, can benefit through different experience. The evolution of human beings has been through the process of inorganic small molecule, organic small molecule, organic polymer, multi-molecular system, primitive life, low animal, high animal and so on. The value phenomenon is accompanied by the development of human beings, and it is important to understand the origin of value in order to understand the value in a comprehensive and profound way, and to eliminate the many controversies existing in the theoretical circle of value. Humans evolved from lower animals, and the value phenomenon is not born, nor is it produced overnight. It has its own origins and evolves with the evolution of human beings. British Glass is calling for seminar presentations, based on practical examples of large manufacturing businesses securing funding for improvement in energy efficiency and carbon reduction, for a one-day glass industry event in November 2017. The category of surplus value clearly reflects the antagonism between capital and labor, because it is the multiplication of variable capital and is possessed by the capitalist without compensation; And the category of profit, it seems, means that capital itself can create a new value. This reversal is the inevitable product of capitalist mode of production. First, because the constant capital + variable capital (c+v) consumed by the capitalist production is converted into cost price, thus concealing the essential difference between the invariant capital (c) and the variable capital (v); Second, because Labour costs into wages, show the labor remuneration, so surplus value into profit, has nothing to do with laborer labor, virtually the only product of the total capital; Finally, the surplus value into profit, on the premise of rate of surplus value into profit margins, namely by means of profit margins, only costs more than the forehead has translate into profits, further into the upfront costs in a certain cycle period more than the balance of its own price. In real life, industry companies is usually based on the established level of profitability, and then obtained the expected LiRunLiang on profit margins by prepaid cost, but it is not a subjective illusion, but objectively completely possible. The scientific argument and practice shows that this profit is actually the increment of variable cost. In short, profit is an intrinsic or an entity, while the rest is an external phenomenon or form. First, choose a trading option. Trading options are eclectic, consulting, researching, or following acquaintances, all of which are ways to select specific trading items. Which method is better because of the difference between man and man. Of course, there are some basic references. For example, the method of trading selection should be based on theory. If some of the basic concepts contained in some method are unreasonable, then this method is undesirable. Second, trading options should tell traders to capture market signals. In the end, this approach should provide some sort of realistic approach to trading people out of trading, rather than cajole traders into doing some sort of trade with their capital. As of December 15, the number of gasoline stocks in the EIA increased by 12.37 million barrels, an increase of 173.28 million barrels, and the previous value increased by 566.4 million barrels. As of December 15, the EIA refined oil depot increased by 769 million barrels, or 14.56 million barrels. In the week ended Dec. 15, the U.S. government said an increase of 754, 000 barrels of U.S. crude oil inventory in Cushing, Oklahoma.