7 11 franchise profit According to this model, the interest rate decision depends on the supply of savings and investment needs, money supply, money demand, four factors, cause a change in the saving investment, money supply and demand factors will affect the level of interest rates. This theory is characterized by general equilibrium analysis. When bank of America merrill lynch survey of investors results also showed that as many as 8% of the respondents expected net amount, 2018 of the yield curve will become flat, it is up to the number of records since June last year. Compression ratio refers to the ratio between the total volume of the cylinder and the volume of the combustion chamber, which indicates the degree of gas compression in the cylinder when the piston moves from the lower stop to the upper stop. Compression ratio is an important parameter to measure the performance of automobile engine. 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. To avoid huge core technology in the form with the original electronic chemical materials business competition, the company also announced the proposed wholly owned subsidiary of zhejiang KaiSheng fluorine chemical 100% equity and zhejiang borui electronic science and technology of 100% equity as a target for public stock transfer, the listed price is RMB 940 million. And originally borui company and responsible for implementing the 2016 KaiSheng non-public stock high purity electronic gas project (phase 1, 2), and fluoride special gas project will be sold with borui company equity transfer at the same time, the company will the three offering investment project has been used and the rest of the fund-raising (through borui back after the company equity transfer and interest) added $1.09 billion permanent JuHua stock liquidity. But in order to better future, we must expand the definition of the word "profit", the economic benefits and social benefits are included, and understand that block chain itself is a social innovation of technical solutions. The "property right of the new system" is the premise. 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.