criticism of profit maximisation Sometimes when we're driving, we suddenly smell gasoline in the car, and then we get nervous. What's wrong with that? I'm sure there are a lot of drivers out there. Here's an analysis of why there's gasoline in the car. Rolling planning laws is according to the principle of "almost fine far" a certain period of the plan, then according to the plan implementation and environmental changes and adjustments and changes to the plans for the future, and by backward, combine short-term and medium-term plans of a kind of planning method. On the other hand, the surge in yields makes interest rates look more attractive than in developed economies, a situation that has been rare since late 2010: Cylinder work volume refers to the volume of gas swept by the piston from the top to the bottom, also known as single cylinder displacement, depending on the cylinder diameter and the piston stroke. Engine displacement is the total volume of working volume of each cylinder, usually expressed in milliliter (CC). Engine displacement is one of the most important structural parameters. It is more representative of engine size than cylinder diameter and cylinder number, and many indicators of engine are closely related to displacement.