how net profit is calculated Advertisement 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 "fish-type duck tail" model partially overcomes the lift of the air when the car is traveling at high speed, but it does not fundamentally solve the problem of lift of the fish. After a lot of exploration and experimentation, the designer finally found a new type of model - wedge. This type of vehicle is to tilt the body forward downward, and the back of the body is as straight as a knife, which can effectively overcome lift. The research analysed five years’ trading connection between 1000 UK individuals split evenly into three age-based groups: 18-30, 30-50 and 50+, while using highest age being over 80. The five years ended in October 09 and so covered bull and bear markets, the banking collapse of 2008 and the volatile 2008/9 markets. In 1934, professor rei, of the center for fluid mechanics, used model cars to measure the aerodynamic drag of various bodies in wind tunnels The orderly performance of the market ensures equal competition and fair trade, protecting the legitimate rights and interests of producers and operators and consumers.