Everyday Science MCQs Fire & Dert Rescuer (FDR) Fire Rescuer (FR) Lead Fire Rescuer (LFR) Rescue 1122 Normally a human can inhale …..liter oxygen in 1 hour. September 9, 2021 Admin No Comments A: 40 B: 50 C: 60 D: 70 Correct Answer: a View More Details >>
