3E451O Practice Test

Listed below are sample questions for 3E451O from our database. Register now to start taking tests for this AFSC! We have 400 questions currently in the database for this category.

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  • 1 . 21. (608) Which technical order do you use when operating the H–9581–2 reverse osmosis water purification unit?
  • 2 . 31. (016) How often does a review of each section’s waste producing process need to be performed?
  • 3 . 74. (030) Which of these items is not a part of a direct current (DC) motor?
  • 4 . 16. (007) Who approves respirators worn by Air Force employees?
    Bioenvironmental engineer (BE)
  • 5 . 41. (416) Before adjusting the high pressure relief control on the 51AF–4 valve, you must also adjust the pressure reducing control (CRD) on the 90AF–8 valve to
    5 psi above normal operating pressure
  • 6 . 19. (408) If the cover chamber pressure on a 90AF–8 refueling control valve stays between the inlet and outlet pressure, the valve
  • 7 . 51. (621) Each Basic Expeditionary Airfield Resources deployable latrine unit consist of
    Six toilets and one urinal trough that drain into a 360-gallon waste tank
  • 8 . 81. (231) Emergency-stop switches are what color?
  • 9 . 99. (241) How many selectable fuel product pumps does each master vehicle identification reader (MVIR) have the capacity to control?
  • 10 . 98. (240) If an automatic shutoff nozzle shuts off all the time, what is the first thing you should check?
    Vacuum tube