Practice question Atmospheric pressure at sea level is approximately: 10.0 psi14.7 psi20.2 psi33.9 psi Answer: B — 14.7 psi The correct answer is shown above. Try the full quiz for additional practice. Practice more: NFPA D O Apparatus Practice Questions - NFPA 1002 Driver/Operator - Apparatus (Pumper) Certification Exam Exam →