Including ambulances, fire engines, sanitation vehicles, TV and radio cars, airport operations, municipal construction projects, etc. Point five: look at the repayment risk. Reimbursement risk fee, is that when investors corresponding borrower overdue list creditor's rights or bad debts, so risk fee reimbursement amount of account can be used to repay the principal and interest first, this will let next fall risk level, safety coefficient is relatively high, so it is more important, investors when the choice must be made sure. The evolution of human beings has been through the process of inorganic small molecule, organic small molecule, organic polymer, multi-molecular system, primitive life, low animal, high animal and so on. The value phenomenon is accompanied by the development of human beings, and it is important to understand the origin of value in order to understand the value in a comprehensive and profound way, and to eliminate the many controversies existing in the theoretical circle of value. Humans evolved from lower animals, and the value phenomenon is not born, nor is it produced overnight. It has its own origins and evolves with the evolution of human beings. Get different communities involved in developing all blockchain products - work through education to collect different intelligence and ensure that the solution can serve everyone. Planning is not only the premise and criterion of organization, command and coordination, but also closely related to the management and control activities. The plan sets the data, scales and standards for various complex management activities, which not only provide direction for control, but also provide a basis for controlling activities. Experience tells us that unplanned activities are uncontrollable and uncontrollable. Because the control itself is to correct the deviation of the deviation plan, to keep the management activities consistent with the objectives. Investment in securities is conducive to adjusting capital investment and improving the efficiency of capital use, thus guiding the rational flow of resources and realizing optimal allocation of resources. That being said, among the collateral damage was the 'retirement dream' of the hopeful baby boomers. The government could not afford to keep their promises of the these folks were supposedly entitled for. So that some of them were postponing their retirement plans and even contemplating of returning to the mainstream in the workforce. But job competition is very stiff considering the massive laid-off as a result from the meltdown thus, the potential retiree were left disillusioned and confused.