The capitalist mode of production first developed from industry and gained dominance, then gradually expanded to agriculture. Because there are two kinds of monopoly in the agriculture, the monopoly capitalism and operation of land and land ownership of monopoly, so it does not have such as like the sort of free competition in the industry, thus hindering the average profit margin. Therefore, the excess profit in agriculture is converted into rent. First, the individual production price of land products is lower than the social production price. The second is absolute rent from the value of land products beyond the price of social production. Both rent entity, agricultural employment is part of the surplus value created by laborer, it embodies the land owners through agricultural capitalist production relations of common exploitation agricultural workers. On the surface, however, the rent is distorted as the value of the land itself, or the gift of nature, thus disguising the real class relationship completely. At the time of. The shape of the car was similar to that of the "sedan" in ancient China, and was as glorious as the car. The car was then called a car. First car, its body modelling is basically used for the carriage, in the form of so called "horseless carriage" English name Sedan is refers to the European noble a luxury passenger carriage, decoration not only pay attention to, and it is enclosed, wind, rain and dust, and to improve the degree of safety. When it was introduced to the United States in the 18th century, it was only possible for rich people in a few big cities such as New York and Philadelphia to enjoy it. When ford introduced the model T model in 1908, the body was changed from open to closed, and its comfort and safety improved greatly. Ford referred to his "Closedcar" as Sedan. The famous ford model T is the best car in the world. Gas car 3. The cost of accounting earnings is listed in historical cost. Due to the current accounting practice in the enterprise asset is measured at the historical cost in, with the cost nature is the historical cost has been derived from the law of the transfer, so as to determine the income is an important factor in the cost and the historical cost. In order to overcome the rear overreach of the ship's car, a strong air eddy effect was created when the car was traveling at high speed, and people developed fish shaped cars like the back of a fish. In 1952, general motors' buick sedan ushered in the era of fish cars. In terms of the shape of the car's back, a fish-type car is similar to a beetle. But as observed carefully, will find fish type car back and ground into the Angle is small, the tail is longer, around the body of the air flow is relatively easier, so vortex flow resistance is also relatively small. Wedge car Economist lynde hull explained that the benefits of capital in different periods of time would be interest. According to linde hull, interest in a specific period and the difference between the expected consumption is savings (during the period of the growth of capital), and returns the sum of consumption and savings are given period of time.