Profit is not only the same in quality, but also the essence of profit. Profit is the form of corporate profit, and is also equal in quantity. The difference in profit is that for variable capital, profit is for all costs. Once earnings into profits, therefore, the origin of profits and material production is made it is a reflection of the "(" the complete works of Marx and Engels in volume 25, page 56), and thus has the various forms of money. In capitalist society, the essence of profit is: it is the product of capital, it has nothing to do with labor. The differences between the two countries are significant because the basic national conditions and economic system of the two countries are fundamentally different. Planned economy and planned economy into market economy, the stage because the traditional pattern of economic and financial structure, imperative the mandatory administrative regulations directly effective, fast, accurate, coupled with the central bank's marketization operation ability is limited, the lack of experience, the benchmark interest rate to today still become society's widespread interest rate decision criteria. The fed is highly marketable, with each "federal funds rate" adjusting to market results after open market operations. Along with the social network virtualization, the market is not necessarily true place and place, many of today's business is achieved through the computer network, China's largest e-commerce site, taobao is to provide the exchange of virtual market. Taobao, Asia's largest online retail business circle, is committed to creating the world's preferred online retail business, founded by alibaba group on May 10, 2003. Taobao now spans two large parts of C2C (consumer) and B2C (merchant to individual). As of 2008, there were more than 98 million registered users, with the majority of online shoppers in China, covering the vast majority of online shoppers in China. In 2008, the transaction volume was 999.6 billion yuan, accounting for 80% of the online shopping market. By transferring ownership and control of data, the entire society's passive consumers will be active participants. With the tools to audit the supply chain, labor security, fair trading, and organic production will all be validated. We can replace advertising terms with proof and replace trust with auditability. What the central bank can do to prevent the threat to its independence becomes more transparent. They can announce the votes of individual board members on all matters related to the policy and publish the minutes without delay. They can hold more press conferences and be less trite in explaining their policies. They can avoid debate on issues far from their task. They can admit that politicians have a right to determine the central bank's mission objectives. 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.