childrens motorized cars Consumption is up 3.1 per cent, according to mastercard, but online retailers are experiencing the best performance of the sales growth, up 12 per cent year on year. Although the supermarket's busiest day is expected to be Friday, card operators have found that spending on groceries has fallen by 0.1% so far. 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. 2. Leakage of gasoline pipe interface In 1946, the famous British economist J.R. hicks, in value and capital, developed the concept of income into a general concept of economic gain. He argues that the real purpose of computing revenues is to make people aware of the amount of money they can spend without making them poorer. Accordingly, he gave a generally accepted definition of "the maximum amount of consumption that a person can spend at the end of the term, at the same level of prosperity". Hicks's definition, though primarily for personal gain, applies to businesses as well. In the case of the enterprise, according to this definition, the enterprise income can be understood as the maximum amount that can be allocated in the enterprise cost accounting period under the same amount of capital at the end of the term and the beginning of the period. In the face of market failure, coase has given the opposite answer: external-utility problems can be solved by explicitly using the market, without government intervention. And zhang wuchang is more absolute, he said that there is no so-called external utility, there is only unclear property rights. Anyway, coase brought revolutionary innovation to market concepts. He made it clear that the key to the market was not the "price mechanism" of impersonal machinery, but the power of participants in economic activity. The taboo of to not eat eggs with soya-bean milk is regarded as the popular about soya-bean milk. There are two reasons for the statement: you are the trypsin in soya-bean milk can inhibit protein digestion, to cut back nutrition value"; second is the eggs in the sticky protein and trypsin in soymilk is combined, to make material stop digested, and help reduce nutrition value ".