A cover letter and cover letter are usually attached to the front or back of your resume.

If the company doesn't explain, the best order is cover letter, resume and cover letter. A cover letter is generally aimed at the position to be recruited, which can let the examiner know your job search direction, then he can look up your resume according to your goal, increase his all-round understanding of you, and finally read your cover letter to understand your job search motivation and future planning.