Compare the three forms of the enterprise system and analyze the main features of corporate enterprises.

Answer: three forms of modern enterprise system: ① single owner system enterprise, is a natural person's enterprise organized by the owner's personal capital and operated directly. It has three defects: First, the enterprise's credit and limited sources of funds, and therefore the development speed and scale is limited; Second, bear unlimited liability for liquidation; Third, the enterprise's life is limited. ② Partnership, is an enterprise established by more than two investment subjects **** the same investment. Divided into two types of general partnership and limited partnership. The main features of proprietorships and partnerships are the low start-up costs and the relatively simple form of organization. However, the unlimited liability system of debt and its equity capital can not be transferred flexibly, so that the risk of the main body of the investment can not be effectively transferred; due to the restrictions on direct financing, there are limitations on the expansion of the scale of the enterprise; the unique structure of property rights, making it difficult to get rid of the life cycle of the enterprise from the limits of the life cycle of the natural person who is the main body of the investment. (iii) Corporate system, the main forms of which are limited liability company and joint-stock limited company, including the wholly state-owned company formed by the restructuring of corporate system. Its main features: First, the plurality of the main body of investment and direct financing function; Second, the limited liability system of debt and investment risk locking function; Third, the circulation mechanism of the stock and the transfer of risk function; Fourth, the hierarchical corporate governance structure and specialized business management.