The car engine is in the design phase, and the fuel used for the compression ratio is set. The compression ratio is a very important structural parameter of the engine, which indicates the volume of the gas at the beginning of the piston at the beginning of compression and the volume ratio of the gas volume at the end of the piston. In terms of power and economy, compression ratio should be bigger and better. The compression ratio is high, the power is good, the heat efficiency is high, the vehicle acceleration, the top speed of the car will be improved accordingly. However, the compression ratio of the gasoline engine is not too large due to the performance of the cylinder material and the vibration of gasoline combustion. In short, a high compression ratio USES a high grade fuel oil. The higher the fuel mark, the slower the oil will burn, and the lower the combustion detonation, the higher the compression ratio of the engine. On the contrary, the low-grade fuel combustion rate is faster, the combustion explosion is large, the engine compression is lower. Is one of the more common usage refers to various enterprises independent, non-profit organization (can be legal person, also can not), and can be further divided into companies and enterprises, the latter such as partnerships, sole proprietorship enterprise, individual industrial and commercial households, etc. he market demand for the mobile, server and SSD product rapid growth, make the memory and flash memory maker Micron and achieved good quarterly results, that is a signal to markets want to continual change. Angelina Jolie is definitely an American talented actress cum director. She has received an Academy Award, two Screen Actors Guild Awards, and three Golden Globe Awards. Jolie has produced her name being an actress that can easily handle action, drama and even directing. She wrote and directed the upcoming film "In the Land of Blood and Honey", a romance set contrary to the backdrop of the Bosnian War. The two big-budget 2010 action movies, "Salt" that was originally written for Tom Cruise, created $300 million within a strict budget of $110 million and "The Tourist" earned 75% of the $280 million overseas market.