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When do you have to hydrostatic test your cylinder? A: When you haven’t been using the cylinder for an period of two years B: When it have been damage due to an fall C: When it have been exposed to temperatures exceeding 82 °C D: All of the above answers are correct ? A B C D What is the effect of voluntary hyper ventilation before doing apnea? A: More oxygen in the in the blood and therefor you can breath hold dive longer B: The carbon dioxide level in your body is decreased and the breathing impulse will be delayed C: The carbon monoxide level in your body is decreased and the breathing impulse will be delayed D: There is no effect ? A B C D If a balloon with a volume of 6 liter is brought from the surface to a depth of 20 meters, what would be the new volume? A: 2 liter B: 3 liter C: 6 liter D: 18 liter ? A B C D When performing the controlled emergency swimming ascent the student have to: A: Drop the weight belt and then swim as fast as possible against the surface while continuously making an aaaaah sound B: Drop the regulator and swim to the surface emitting an aaaaah sound C: Ascent to the surface with an normal ascent rate with all the equipment in place and emitting an aaaaaah sound D: Keeping all equipment in place, ascent to the surface with the help from a rope, while emitting an aaaah sound ? A B C D At which depth is the partial pressure of oxygen in air 1.6 bar and consequently starts the risk of convulsions without warning? A: 100 meters B: 40 meters C: 70 meters D: 66 meters ? A B C D Because of _________________ you see less contrast under water than you do in air. A: refraction B: reflection C: absorption D: diffusion ? A B C D What is the problem with an pneumothorax? A: Air caught between the lung and the pleural lining which will expand during the ascent and can cause heart problems B: Air caught in the neck and is causing changes to the voice C: Air in the blood D: Air caught around the heart/lung, that during ascent expands, causing the symptoms of shortness of breath ? A B C D If you have an diver suspected of having decompression illness, which of the following procedures should you NOT follow: A: Let the person lay down and donate O2 B: Perform first aid and contact the EMS C: Encourage the person to take a hot shower and move a lot around to eliminate N2 bubbles D: Perform first aid ? A B C D After a lung overpressure injury, air is accumulated in the center of the chest, between the tissues and around the hart. This indicates a condition called: A: Pneumathorax B: Mediastinal emphysema C: Air embolism D: Subcutaneous emphysema ? A B C D What can cause an “vertigo”? A: Cold water entering the ear B: A ruptured eardrum C: A light case of reverse block in one ear D: All answers above are correct ? A B C D An object is laying at a depth of 5 meters and has a volume of 344 liters. The weight of the object is 740 kg. How much air should you put in a liftbag to give the object a neutral buoyancy in fresh water. A: There is not sufficient data to calculate this. B: 375 liters C: 594 liters D: 396 liters ? A B C D In a balanced regulator: A: the opening of the high pressure seat is not assisted or restricted by the pressure in the cylinder. B: the intermediate pressure is higher than 12 bar. C: the intermediate pressure stays the same, regardless of depth. D: None of the above. ? A B C D What does the + stamp, on the neck of the cylinder, mean? A: You can fill the cylinder to 10 % above the working pressure B: The cylinder have to be controlled more often C: The cylinder can be used twice as long without testing it D: It is an aluminum cylinder ? A B C D Why should you have your cylinder visually inspected? To look for: A: Corrosion on the inner side of the cylinder B: Corrosion on the bottom of the cylinder C: Corrosion between the cylinder and valve D: All of the above answers are correct ? A B C D What have the biggest influence on tides? A: The gravity from the sun B: The gravity from the sun and the moon C: Storms and hurricanes around the world D: Currents and topography of the oceans ? A B C D A diver is suspected of having decompression sickness. As a part of the management of the accident, you have to: A: Give oxygen and transport the patient as soon as possible to the nearest recompression chamber B: Give oxygen and contact only the local emergency medical services. C: Give oxygen, contact the local emergency medical services and DAN or a local recompression chamber for advise. D: None of the above. ? A B C D A 5 minute compartment has reached (approached) the equilibrium with the surrounding pressure, in ______ minutes after arriving in an environment with a different pressure. A: 5 minutes (because it is the 5 minute compartment) B: 30 minutes (because there are 6 periods) C: 70 minutes (because the RDP has 14 compartments) D: 10 minutes (because that completes 2 halftimes ½ + ½ = 1 complete) ? A B C D What are the consequence of an elevated nitrogen partial pressure? A: Red colored lip’s B: Carotis sinus reflex C: Hypercapnia D: Nitrogen narcosis ? A B C D When using dive computers: A: you have a more valid decompression model than when diving with tables. B: each diver should have a personal computer. C: you can avoid many of the guidelines required when diving with tables. D: All of the above. ? A B C D What should you do, if you have a person who have had a near drowning accident but says that he feels all right: A: Send the person to a medical clinic for further observations B: Give the patient something to drink C: Bring the person with on the next dive D: Transport the person to the nearest recompression chamber ? A B C D
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