what is the equation for profit Planning is so important for the success of the transaction that it is necessary to use a hypothetical example to further illustrate. In the latest "near-term energy outlook," the U.S. energy information administration (EIA) said that in November, conventional gasoline retail prices in the United States averaged $2.56 a gallon, up about 6 cents a gallon on a month-on-month basis. The data initially showed that crude prices were rising. Meanwhile, the U.S. energy information administration (EIA) forecasts that conventional gasoline retail prices in the U.S. will hit $2.59 a gallon this month, up 34 cents a gallon from the previous year. The U.S. energy information agency expects the average U.S. retail price to be at $2.51 a gallon by 2018. Two extremes can be envisaged. In an extreme case, each production is done by a single individual, such as a person making a car. In this way, the person is going to trade with a lot of intermediate goods suppliers, and also to trade with the demanders of their products. In this case, all transactions are conducted through the market in many individuals. In another extreme cases, all the production in the economy in a large enterprise, such as the complete car was produced in the enterprise interior, don't need to make any intermediate products trading market. Therefore, the same transaction can be conducted either through the organizational form of the market or through the organizational form of the enterprise. Companies exist, or companies and markets coexist, because some transactions cost less in the enterprise, while others cost less in the market. 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 bank of England says Britain is a European banker, and the imf welcomes the progress of Brexit - and that's what happened Gas vehicles mainly include liquefied petroleum gas vehicles (LPG vehicles or LPGV) and compressed natural gas vehicles (CNG cars or CNGV). As the name suggests, LPG cars are fueled by liquefied petroleum gas (LPG) and CNG is powered by compressed natural gas. The CO emission of gas vehicles is more than 90 percent less than the gasoline car, the hydrocarbon emission reduction is more than 70 percent, and the nitrogen and oxygen emission reduction is more than 35 percent, which is the current relatively practical low emission vehicle.