In addition, the national standard has strict regulations on the content of various chemical components of gasoline such as benzene and olefins. Alkenes are high in content, which can produce gelatinous substances in the process, and accumulate in intake manifold and valve catheter. When the engine is in normal working temperature, there is no abnormal phenomenon; When the engine has cooled for some time, the glial will stick the valve inside the valve tube. When you start the engine, you will have a top valve phenomenon. The toxic benzene content should not exceed 1%. It is also worth noting that in 1985, the financial accounting standards board released the concept of income from the concept framework (SFAC)NO. 6. In 1989, the international accounting standards board's framework for preparing and providing financial statements made clear that benefits also included unrealized gains. In 1997, FASB's FASB N0.130 required a full return; In 1998, IASC's IAS NO.1 required the preparation of an equity change table, a comprehensive income statement, including the benefit of reflecting corporate assets. What should we do now, other than what we have achieved? The value contains human consciousness and the double development of life, including the unity of human and external nature. All the development of the self - world is of value. The core essence of value is the free man, and the man who creates himself is the free man. Man is the ultimate object of value, man is the value ontology, man's behavior is the source of value, and the development of man is the result of value. The development of human beings is the unity of human's inner contradictions and external contradictions. It is the overall development of human consciousness and human life and the whole development of human and nature. That is, the self-creation of man and the unity of external creation and creation of nature, and the creation of this freedom is also the value behavior, so the whole value is the realization of freedom Loading may be the work which is invested in a work centre. For example, time might be lost while changing over from making one component to another. If your machine breaks down, it won't be available. If there is machine reliability data available, this should also be considered. Sometimes the equipment might be awaiting parts to arrive or be 'idling' for many other reason. Other losses could have an allowance for the machine being run below its optimum speed plus an allowance to the 'quality losses' or defects which your machine may produce. Of course, several losses should be small or non-existent in the well-managed operation. Finite loading is an approach which only allocates work to a work up to set limit. This limit is the estimate of capacity for that work centre (in line with the times designed for loading). Infinite loading can be an way of loading work which doesn't limit accepting work, but instead tries to handle it.