when price discrimination is profitable In general, us interest rates fall and the dollar weakens. Us interest rates rise and dollar trends favour. A change in the price of U.S. Treasury bills, especially long-term Treasury bills, can help to predict the direction of the U.S. dollar. If investors think the us inflation is under the control, then under the existing Treasury bonds interest rate to attract, especially short-term Treasury bills, will attract investors, bond prices to rise. In the fifth stage, the national standard of motor vehicle gasoline is equivalent to the current standard in Europe, which meets the requirements of the standard of gasoline vehicle pollutant emission in the fifth stage. According to the ministry of reform, the ministry of finance and the ministry of environmental protection, the ministry of environmental protection and the ministry of environmental protection issued a notice on the issuance of a plan for the upgrading of refined oil products, and expanded the scope of the implementation of the five standards of automobile and diesel oil. Starting from January 1, 2016, China's eastern region is fully supplied with five standard vehicle gasoline (including E10 ethanol gasoline). Starting from January 1, 2017, the nationwide supply of motor vehicles (including E10 ethanol gasoline) that meet the standard of China's fifth standard will be fully supplied, while the domestic sales of the five standard vehicles will be stopped at the same time. "We are concerned that if the UK decides to leave, it is likely to lead to a weaker pound, higher inflation, lower disposable income and less investment," she said. 3. The inseparability of shares, that is, shares are the most basic unit of the company's capital, and each share must not be divided; The income or loss of equity investment in an enterprise refers to the balance of the income of the enterprise due to the withdrawal, transfer or liquidation of the equity investment. The income from the transfer of equity investment shall be incorporated into the taxable income of the enterprise and shall pay the enterprise income tax according to law. It is also worth noting that in 1985, the financial accounting standards board released the concept of income from the concept framework (SFAC)NO. 6. In 1989, the international accounting standards board's framework for preparing and providing financial statements made clear that benefits also included unrealized gains. In 1997, FASB's FASB N0.130 required a full return; In 1998, IASC's IAS NO.1 required the preparation of an equity change table, a comprehensive income statement, including the benefit of reflecting corporate assets.