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. According to the local biggest news agency Press Trust of India news agency (Press Trust of India) reported that, according to official sources in nine exchange about 2 million registered users, about 400000 to 500000 people have been conducting currency trade and investment. Finally, the regulatory layer began to conduct financial management of the Internet platform, intending to return money funds to the source of low risk, low yield and high liquidity. The international monetary fund cut its growth forecast for the UK to 1.6 per cent this year from 1.7 per cent in October and is expected to grow by 1.5 per cent in 2018.