There are many candidates who mention the civil aviation security class, think that do more "physical work", such as repairing aircraft mechanics is a skilled worker. That can be very wrong! Modern aircraft collection of a large number of high-precision technology, the technical level and comprehensive quality of security personnel are extremely high requirements. At the same time, more and more new models are being put into route operation, and new concepts and technologies are revolutionizing the traditional operation and maintenance as well as engineering management work mode. Today, big data, drone inspection technology, 3D printing, robotics and other modern technologies are widely used.