marketing managing profitable customer relationships Compression ratio refers to the ratio between the total volume of the cylinder and the volume of the combustion chamber, which indicates the degree of gas compression in the cylinder when the piston moves from the lower stop to the upper stop. Compression ratio is an important parameter to measure the performance of automobile engine. (3) monetary benefits -- increase the monetary value of assets. There are both measurable and unquantifiable benefits in these three different forms of income. Among them: mental income is too strong to measure, monetary gain is easy to measure because of the static concept of value change. Economists, therefore, focus only on actual earnings. Macroeconomics' need for government intervention ' After all, with tighter regulation and tight capital, high interest rates and high limits mean high risk, but investors should also be careful not to put money in one basket. Solution: as long as the gasoline in the tank is exhausted, the extra gasoline vapor in the tank can be fired into the cylinder by the negative pressure of the engine, and no gasoline vapor will overflow. The government also told the bank of England that it could increase its $25bn in regular funding schemes, which means that this is unlikely to change.