I am a college graduate majoring in engineering cost. I have no work experience. How can I find a job when I get my diploma? Can I find other good jobs?

You can be a documenter, material engineer, cost engineer, intern, technician, etc., depending on what position you want to take. Generally, engineering cost majors will choose to continue to do engineering cost in the future. They can do engineering cost as interns in the early stage, but the early stage is very hard and the treatment is not high. Just stick to it.