formula of profitability In the late 19th and early 20th century, with the transition from free capitalism to monopoly capitalism, the factory itself had undergone complex and profound changes. Constantly adopt new technology to make the production rapid development; The scale of production keeps expanding, competition intensifies, and a large-scale monopoly enterprise is produced. The separation of rights and ownership and the formation of a professional management stratum; The scientific management system has been established, and a series of scientific management theories have been formed to make the enterprises mature and become modern enterprises. Apple has released some incredible huge facts for their third quarter of 2011, with quarterly revenue reaching $28.7 billion, growing 82% year over year along with a net gain of $7.31 billion. Steve Jobs, Apple's CEO said: 'We're thrilled to deliver good quarter ever, with revenue up 82 percent and profits up 125 percent.' and the man added 'Right now, we're very focused and pumped up about bringing iOS 5 and iCloud to the users this fall.' On Wednesday, on the first four shopping days of Christmas, upscale stores were discounting heavily, including most of the fashion retailers. H&M offers discounts of up to 60%, while Debenhams, Fraser, French connections, gaps, new faces and Dorothy Perkins offer discounts of up to 50%. New participants in the education blockchain ecosystem Meet with difficulties, clothing retailers in October and November for coat and knitwear sales was blocked by the untimely warm weather, while the housing market slowdown means DIY furniture chain and tough times. 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. After the black Friday rush, consumer spending is being squeezed.