To become one of the 18,000 specialized new college graduates Uncle Sam takes on each year it is better to be trained for some things than others. Example:

If you are a hot-shot engineering there is a good chance the government wants you. And at a starting salary anywhere from $1,000 to $3,000 more than a secretary, writer or managem ent trainee will get at the same grade.

Doctors - both new and old - are also in short supply in government and agencies also give them permanent pay bonuses for signing up.

If you've labored four years to be a social worker, pyschologist or are a new or used teacher or English major, what wyou will most often hear is the bureaucratic equivalent of don't call-us-we'll-call-you.

The government job market has been so tight in recent years that it took a test score of 95 or better before an applicant was even considered for a job. That score requirement is expected to drop somewhat this year, mainly because of the drastic steps the government has taken to discourage job applicants. They include cutting down the "open seasons" when tests are given, and cutbacks in recruiting efforts.

Tgovernment is the largest single employer in the country. But most of the 150,000 people it hires each year come in at the clerical level, or through entry points other than for recent college graduates who usually come in Grades 5 through 9.

The outlook for many new college graduates - except engineers - is tough. The health-related fields do have openings, and the best places to look, hiring experts say, are HEW, Veterans Administration, Public Health Service, Air Force, ACTION and the Agriculture Department.

Accountants, who once were in great demand, have lost their glamor status with federal personnel offices. The government has even dropped the special rate it once paid them, although "good" auditors who are willing to travel are still reported in short supply.

The [WORD ILLEGIBLE] jobs the government has are often on Indian reservations.

Job Corps Centers or in federal prisons where emphasis is on remedial skills. The Defense Department does have overseas teaching jobs, but it has a backing of applicants and usually considers only experienced teachers.

Federal officials will update their hiring forecasts later this year after seeing what Congress does to agency budgets what new programs are approved, which agencies expand and which are cut back.