essay weekend activities 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. At present, there are 89, 92, 95 and other labels on the market, which represent the octane value of gasoline, which means the anti-detonation of gasoline, which has nothing to do with the cleaning of gasoline. The so-called "high label gasoline is cleaner" is misleading. It is more scientific, more economical, and can give full play to the engine's efficiency according to the engine compression ratio or the requirement of the automobile instruction manual. "People say 'oh, those experts', but we're seeing what we call potential risks being rolled out. This is not what the experts say, this is what the economy is showing. " Stopping trading is an important part of the plan. The fund's fourth consultation underlines the enormous uncertainty facing Britain in the ambitious task of negotiating an exit from the eu. The new architecture also means the pages on the content rich site now load in milliseconds, ensuring that potential customers visiting the site are engaged for long enough to register their interest.