Now I am engaged in the work of weak current. What I used to do was intelligent detection, but now I'm doing weak current construction, so it's still useful to take an examination of the electromechan

Now I am engaged in the work of weak current. What I used to do was intelligent detection, but now I'm doing weak current construction, so it's still useful to take an examination of the electromechanical major of Erjian. 1, Erjian is necessary, it is the future qualification certificate (project manager and technology), and it is also a necessary means of real income besides salary.

2. Second Construction is suitable for comrades who have worked with a bachelor's degree for two years, and it is also easier to pass.

3. The first construction project is suitable for comrades who have worked in undergraduate courses for five years, and it takes a long time and is not easy to pass.