What level? Be specific, there's 4 different possibilities, we can't read your mind....They all come down to scene safety then ABCs. Anything in your text is fair game.
NREMT-B is mostly ABCs. Took it like 2 years so I don't remember a ton but honestly go back to basics. NR test questions suck, you'll get 2 good answers and you have to pick the best one. Know 'normal limits' for vitals, your doses for ASA, Activated Charcoal, O2 through the different delivery devices (it's stupid but according to NR everything gets 15lpm via Non-rebreather mask), how to us an Autoinjector.
Honestly, NREMT tests your test taking skills, not your knowledge.