its basic arithmetic reasoning, math knowledge, verbal expression, word knowledge, and general science, and assembling objects. these u should fly by on the real test.
depending on what ur degree is in... you SHOULD be okay... the only ones i would say to take a closer look at would be...
dont aim for a 31... aim high... u can achieve anything u put ur mind to. get the kaplan asvab study guide and read through it and do the practice tests there... you'll do great trust me... i did and i got an 88. good luck... and remember your future job depends on it...