fannie mae profit Activity-based costing (ABC) is an effective management technique for assigning and manipulating the overhead costs. Overhead expense analysis and assignment can be achieved more accurate by utilizing ABC methods for a variety of products, for product expenses and profitability analysis and for appropriate distribution and control over the overheads. 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. Point 2: look at the mortgage. The p2p platform is a credit loan or a mortgage. If it is a mortgage, it depends on what the mortgage is mainly, such as real estate, vehicles, etc., the loan risk of the mortgaged property is much smaller than the credit loan. If there is a risk, the company will sell the mortgage of the borrower to the investor. Wealth managers say that not only the collateral, but also the mortgage rate, which is the percentage of the value of the debt and the collateral. The mortgage rate is mainly to prevent the mortgage from not sufficient to cover the debt. If it is not, the risk of investment will increase and the situation of repeated mortgage will be avoided. "The tax authorities are investigating allegations of tax evasion after reviewing records of individuals and entities. The authorities are sending a notice to them that they will have to pay a capital gains tax on bitcoin investments and transactions." The response to multilayered values is rational. Rational (including abstract thinking with image thinking) is higher animals, are now known to have intelligent human only) on the basis of intellectual responses, to the further development of it by means of language, text or image will intellectual formed by various basic concept and basic image fixed in the form of the second signal system in the brain, and within the brain to be more complex, the deeper, longer series "sex", "rigid instinct", "elastic instinct" and "intellectual" and other forms of reaction. Among them, the cognition of the relation between the basic concepts forms the abstract thinking, and the person's understanding of the relation between the basic images forms the image thinking. Rationality is human to the second signal system of "reflection" type of reaction activity, it can find out the basic concept and basic image, more general internal relation and essence difference between to discover things between the movement of more general and more abstract and change rule. For example, people form "water" and "to..." through the practice of production and life. To ", "low" and "flow", the concept of nouns, prepositions, adjectives, verbs, between these concepts through a certain form of conditioned reflex established a mutual connection, thus obtained the "water flows downwards" such a logic rules. The importance of gasoline was not recognized in the 19th century, when it was used in a great deal of kerosene. The oil refining then relied on simple distillation processes to separate the different components of the oil from the boiling point. The boiling point of the kerosene component is higher, and the use of safety when lighting lamps becomes the main product of crude oil refining, while gasoline and other components are often burned as fuel. By the mid - to late 19th century, the successful use of gasoline engines in 1886, in 1886, the gasoline engine was successfully used as a driving force, thus the importance of gasoline increased. But using distillation, only 20% of the gasoline can be extracted from crude oil. In 1911, the standard oil company have solved the problem of low gasoline yield, by William burton and Robert hamm forest thermal cracking process of the invention, the heavy quality heating gas oil cracking of light gasoline fractions, such as to overall improve the gasoline yield, thermal cracking process in 1913 won the patent license in the United States. The subsequent catalytic cracking process has further improved the gasoline yield and octane value.