Compression ratio refers to the ratio between the total volume of the cylinder and the volume of the combustion chamber, which indicates the degree of gas compression in the cylinder when the piston moves from the lower stop to the upper stop. Compression ratio is an important parameter to measure the performance of automobile engine. In 1937, American economist Robert coase (R. H. Coase's publication of the essence of the enterprise is considered to be the beginning of a discussion on this issue. 4. The transferability of shares, that is, the shares held by shareholders may be transferred according to law. Such as "company law" the one hundred and forty-second regulation, company directors, supervisors and senior managers shall declare to the company's shares held by this company and its changes, in office during the transfer of shares shall not be more than a year the company shares he holds 25% of the total; The shares held by the company shall not be transferred within l years from the date of the listing of the shares of the company. The company's directors, supervisors and senior managers shall not transfer their shares in the company within half a year. In addition, the company law allows the company's articles of association to assign other restrictive provisions to the company's directors, supervisors and senior managers in the transfer of its shares of the company. The allocation of shares means that the company assigns the shares to the subscribers according to certain allocation methods according to the sponsors and (or) other shares subscribed by the company. If the total amount of subscription exceeds the total amount issued, the allocation shall be determined according to certain principles. Payment of shares and allocation of shares are two aspects of the same activity. After the allocation of shares, the name or name of the shareholder shall be recorded on the list of shareholders. If a trader has set a profit target before entering trades, so once an obvious is likely to achieve this goal, he immediately issued a "limit order" one article, and out of the deal. There is also the possibility that traders have been letting profits rise until some sign of change in the direction of change in price. In this case, the exit plan may be defined as: "sell at the stop loss point or sell when the index hits the sell signal; Which case comes first and then act on the same way. Regardless of which profit plan is used, it is important for traders to realize that the ultimate goal of the transaction is to accept profits. Unless he decides to try his luck again, he should always keep in mind the clear line that he receives. Many successful traders understand that money is easy to make. The trader who put the money in the back of his mind will eventually experience the painful truth: "trees don't grow up in the sky." “Agency workers deserve to be paid the same as employees if they’re doing the same job, so the government should look to close the loophole that allows agency workers to sign away their right to equal pay. 6. Clarity. Plan should be clearly expresses the organization's goals and tasks, clearly expresses the resources necessary to achieve goals and taken by the procedures, methods and means, explicitly expresses the managers at all levels in the rights and duties in the process of execution plan. But in order to better future, we must expand the definition of the word "profit", the economic benefits and social benefits are included, and understand that block chain itself is a social innovation of technical solutions.