2. Master of Science.

3.DA: district attorney (district attorney? )

1. According to the differences in academic levels around the world, most undergraduate schools generally offer BA (Bachelor of Arts), and a few vocational and art colleges offer BFA (Bachelor of Arts). Design majors and digital media in individual art colleges provide BS (Bachelor of Science). The postgraduate stage is divided into two directions: MA and MFA. Ma's major in film studies is 1 to two years, mainly studying and researching film theory. Most MFA majors are MFA film production, and this degree is mainly engaged in film production, writing, directing and post-work.

2.MS academic master, usually with a two-year academic system, basically has some research-related parts, and you can continue to study for a doctorate in the future. The other is Meng, whose full name is Master of Engineering, that is, Master of Business. Basically, the academic system is 1 to 1 year and a half, and there are few research-related parts in the course, which are basically classes and homework. Since I am career-oriented, I usually look for a job directly after reading.

3.？ The district attorney is a politician and needs to be accountable to the voters. Usaty O 'Neill is a professional bureaucrat, and there are essential differences between them.