definition of profit maximization in economics 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. Mr Draghi added that this meant that the ECB staff and its council were "cautious" in the "bold" stance of inflation. Because China's mainstream economics mechanical property right understanding into property of power based on stock, so, in the name of the Chinese norm of the reform of property right will be the eye looks at on the stock of state-owned assets, simple and ridiculous "privatisation" scheme, clear property rights is approximate to "privatization". It was a misreading of coase, a misreading of alchin and even an insult to them. The precise description of property rights should be the right to clarify individual pursuit of wealth. According to Jerome McCarthy, "basic marketing" : a market is a group of potential customers with the same needs; They are willing to trade the goods or services offered by the seller in exchange for something of value, which is the way to meet the demand. On November 11, 1997, the bank of England took a big step towards independence, politely revising the "banking law" of 1946 and reading it in the lower house. The bill passed legislation affirming that Gordon Brown, the Treasury secretary, freed government control from the central banking business. This is the hallmark of an institution that has been under the yoke of government for a century and a half. It symbolises how demand for central bank independence becomes conventional wisdom.