ANSWER: The statement Ramin is likely to include inside his cover letter is "I AM A MECHANICAL ENGINEER"
EXPLANATION: when applying for a job, your cover letter should properly introduce who you are. Employers always look out for your cover letter, to determine if your CV worth being screened.
Since Ramin is a mechanical engineer, it is assumed that will be his first sailing point, as he will mention that, while introducing himself to the employer. For Ramin to apply for a job as a mechanical engineer, that means such jobs suits mechanical engineering profession, that's why it is necessary Ramin should introduce himself as a mechanical engineer.