According to financial data from its official website, revenue rose from $1177,000 to $40,374,000 in 2015-2017, and after-tax profits rose from $713,000 to $7082,000. Then the interest rate theory of the loan is the interest rate theory of neoclassical school, which is proposed to correct Keynes's theory of "liquidity preference". In some ways, the theory of interest rate can be regarded as a synthesis of classical interest rate theory and Keynesian theory. Investment refers to the specific economic subject in order to reap the benefits in the foreseeable future period or capital appreciation, within a certain period of a certain subject matter in the field of putting enough amount of money or currency equivalent physical economic behavior. It can be divided into physical investment, capital investment and securities investment. The former is to put money into the enterprise, make a certain profit through production and operation. The latter is to purchase the shares and corporate bonds issued by the enterprise and indirectly participate in the profit distribution of the enterprises. Securities investment analysis method mainly has the following three: analysis of fundamental analysis, technical analysis, evolution, in which the fundamental analysis is mainly used in the choice of investment subject matter, technical analysis and evolution analysis is mainly used in the specific investment operation on the judgment of time and space, as a useful supplement to improve effectiveness and reliability of investment analysis. Although many individuals have taunted to be with her tall and skinny stature, but Ana Ward's figure can be an advantage inside modeling world. In fact, the impossibly thin and freaky-looking girl has entered the Cycle 15 of America's Next Top Model. After defeating 22-year-old Chelsea Hersley for being the new "Top Model", Ann said, “I\'m so honored today. All those surveys are about being too tall or just being not normal”. In 1934, professor rei, of the center for fluid mechanics, used model cars to measure the aerodynamic drag of various bodies in wind tunnels Commercial vehicles are divided into three categories: passenger cars, vans and semi-trailer tractors. The passenger bus subdivided into small passenger car, city bus, coach, tourist bus, hinged passenger bus, coach, off-road bus, private bus. Goods vehicles are subdivided into general goods vehicles, multi-purpose lorries, full trailer tractors, off-road trucks, special operations vehicles and special goods vehicles.