oil additive to stop leaks The current GB/T3730.1-2001 car is divided into passenger cars and commercial vehicles. Someone asked: "is value subjective or objective?" In fact, the formulation of this question does not accord with dialectical materialism. Because if that value is an objective rather than subjective, which he said is equal to the value only from the objective existence of its form, without subjective reflection of form and at the same time, the or value of the objective things can't be human understanding, that an agnostic mire; On the contrary, if think value is subjective, not objective, it is said that only a reflection of its subjective value form, rather than the form of the objective and at the same time, the value is entirely subjective since birth, not the reflection of objective things, which in turn into a mire of idealism. Competition refers to the economic subject in order to maintain and expand their own interests and take all sorts of behavior, the behavior of self-protection and expansion efforts in product quality, price and service advantages, varieties, etc. First, choose a trading option. Trading options are eclectic, consulting, researching, or following acquaintances, all of which are ways to select specific trading items. Which method is better because of the difference between man and man. Of course, there are some basic references. For example, the method of trading selection should be based on theory. If some of the basic concepts contained in some method are unreasonable, then this method is undesirable. Second, trading options should tell traders to capture market signals. In the end, this approach should provide some sort of realistic approach to trading people out of trading, rather than cajole traders into doing some sort of trade with their capital. 5. Accounting earnings depend on the reasonable proportion of income and expenses during the period. Costs that are not associated with the current period should be incurred as assets to be transferred for later periods.