(The first-level construction engineer majoring in electromechanical engineering is a project manager who understands technology, economy, management, and laws and regulations based on the major of electromechanical engineering. In the grasp of the compilation of mechanical and electrical engineering technology in this chapter, it is mainly based on the meaning of the sections, items and articles of the national first-level construction engineer qualification examination outline, and carefully organizes the selection of mechanical and electrical engineering majors from small to professional contracting projects, from design preliminary to test. Involved in the general contracting of completed construction projects)