center for non profit ^ h h, however, interest rates are still significantly lower than in November 2015, when an average of 2.62 PC. Gasoline English called Gasoline (beauty)/Petrol (UK), appearance is transparent liquid, inflammable, distillation range of 30 ℃ to 220 ℃, main components in C5 ~ C12 fatty hydrocarbon and naphthene classes, and aromatic hydrocarbon, certain amount of Gasoline with high octane number (antiknock combustion performance), and by the discretion of octane number can be divided into no. 90, no. 93, no. 95, no. 97. Straight-run gasoline components which are obtained by oil refining gasoline, catalytic cracking gasoline, catalytic reforming gasoline components such as different after refined gasoline with high octane number components made by the harmonic, mainly used in automobile ignition internal combustion engine fuel. Originated in ancient human market trading place for a fixed period of time or place, after the urban growth and prosperity, live in the city of adjacent area farmers, craftsmen, artisans, will start to deal with each other and contribute to the economy of the city. Obvious, the best way to trade is in the city there is a centralized, as market, can let the people in the provision of goods and business services, convenient for people to find goods and business contacts. When a city's market becomes large and more open, the city's economic vitality is also relatively growing. The selection and evaluation of transactions. Engaging in foreign exchange investment, one must choose a profitable trading method. Here are some factors to consider in trading options. The independent of interest is of positive significance to show the active role of the fund users in the reproduction process.