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Appendix A APPENDIX 205 16. Ears, sinuses, lungs, intestines, teeth. 17. Difficult or impossible to equalize pressure in your sinuses. 18. Exhale through your nose into your mask. 19. Squeeze. 20. Vertigo, ruptured ear drum, hearing loss. 21. Swollen or congested sinuses. 22. Mask squeeze. 23. Block or reverse block. Lungs and Breathing 24. Holding your breath, not breathing properly. 25. Normal. 26. Carbon dioxide. 27. Slowly, deeply. 28. Keep the mouthpiece in your mouth. Indirect Effects of Pressure 29. Have cylinders filled with compressed air only. 30. Have cylinders filled at a reputable air station. 31. Dive within your depth and time limits, ascend slowly. 32. Dive at shallow depths. 33. Ascend a few feet to relieve the symptoms. Thermal Effects of Diving 34. Conducting heat away from your body, compressed air to your body temperature. 35. The air cools. 36. Surface tension. 37. Prevent dehydration. 38. True. CHAPTER 5 Ingassing and Outgassing 1. Ingasses, equilibrium. 2. Relieve pressure by ascending too fast. 3. Six meters (20 feet). 4. In excess of normal nitrogen that remains in your body after a dive. Dive Table Rules 5. 9 meters (30 feet). 6. 10 minutes, 1 hour. 7. 18 meters (60 feet)/30 minutes 15 meters (50 feet)/20 minutes 9 meters (30 feet)/40 minutes. 8. 12 meters (40 feet)/40 minutes. Table 1 9. H. 10. I. 11. D. Table 2 12. E. 13. B. 14. F. Table 3 15. 31 minutes. 16. 18 minutes. 17. False. 18. 30 minutes. 19. 73 minutes. 20. 37 minutes. 21. 42 minutes. Sample Problems 1. See Figure A-3. page 208 2. See Figure A-4. page 208 3. See Figure A-5. page 209 4. See Figure A-6. page 209 5. See Figure A-7. page 209


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