Urban Policy and Planning > EXAM REVIEW > SDI Certification Exam Review:Questions & Answers: Updated APlus Guide (All)
SDI Certification Exam Review:Questions & Answers: Updated APlus Guide
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What should you do if you suddenly feel sick and develop a headache during a scuba dive? (Ans- Abort dive and controlled ascent. Breathe fresh air or oxygen As pressure increases (Ans- Volume d... ecreases What is the main purpose of a snorkel? (Ans- Allows you to conserve air from your scuba cylinder at long intervals of time at the surface How do you know if your mask fits correctly? (Ans- Will tighten to your face and won't fall off via suction through your nose Name one audible and one visual rescue signal device (Ans- Whistle/horn Bright-colored lift bag Name two basic fin designs (Ans- Full-foot and open-heel What is the main difference between a wet suit and a dry suit? (Ans- Dry suit is designed with an integrated inflation system to keep body completely out of contact with water. Dry suits keep divers completely dry for use in cold water (below 50 degrees) What extra attire can provide warmth? (Ans- Hood, hooded vests, boots, gloves, caps [Show More]
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