properties of profit function "Task list including trade agreement with the European Union, and about 60 countries negotiate a new agreement, by replacing Britain's current political party, joining the European Union to strengthen the human and the customs and other services IT resources, and translate thousands of eu law into domestic laws and regulations. " We should improve the market supervision system of administrative law enforcement, industry self-discipline, public opinion supervision and mass participation. Charlotte Nelson, of Moneyfacts, said: "only 56 providers of SVR went up, seven of which raised their interest rates by less than 0.25 percentage points, resulting in a more modest rise in average SVR. Under the theoretical framework of the theory, the theory of commodity market equilibrium and the monetary market equilibrium of Keynesian theory are unified. Marx's theory of interest rate decisions from the perspective of the source and essence of interest, taking into account the institutional factors in the role of interest rate decisions of interest theory, its theoretical core is the interest rate is determined by the average profit margin. Marx believed that under capitalism, interest is a part of profit and a form of conversion of surplus value. No one is a fool, and money doesn't make a profit. Yu 'ebao's interest rate cut is also to avoid risk. We have been using internet banking for quiet sometimes now. Even though there are internet banking security breach occasions, nevertheless the percentage is quite small. People has learned to be very careful and protecting themselves when you use internet banking. Internet banking users are smart people and they understand how to protect their computer from malware and hacker which has the possible to interrupt into their internet checking account.