is oil a commodity Mooney and si prowse in its around the main accounting principles for enterprises ", not only emphasize to determine profits in a timely manner, and emphasizes the necessary through division operating earnings, the gains and the impact of price changes, to improve the comparability of financial statements and understandability. Additionally, some businesses tend to omit or neglect the after-sales service. /After putting the money into the pocket, businesses shoulder no responsibility for the successive service. This narrow-minded view wipes off the potential business based on customers' impression. When Businesses have been immersed in counting the temporary money, they have failed to gain more in future. /For example, the diamond of shoes from ABC I had purchased dropped off in two days. I had to head for the relevant repairing center. However, the repaired shoes broke again and irritated me to ask for the refund. What's more, they even charged more for the refunded money. Later I sworn never to offer a glance at this shop and dissuaded friends from visiting it. The customer's feeling directly decides on products' life in the market. The fund's managing director Christine Lagarde said Christine Lagarde, in June 2016, voted to leave the European Union has an impact, the British economic growth this year and in other parts of the world economic growth. Leakage may occur at the interface of the gasoline pipe, which leads to the use of the air conditioning system into the vehicle. If the owner found the car fumes, deal with gasoline pipeline - open interface to check engine hatch, it is easy to discern does the interface of gas leakage, for a period of time after the leakage surface will appear a layer of oil sludge. If the leakage of the gasoline pipe is found, the interface should be tightened or repaired. Gasoline is the largest oil product consumed in the United States last year, according to the U.S. energy information administration (EIA). Last year, gasoline consumption averaged about 9.3 million barrels a day (391 million gallons) a day, a record high, about 47 percent of U.S. oil consumption.