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Technical diving: Quiz

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Question 1: Deep air proponents base the proper depth limit of air diving upon the risk of ________.
Carbon monoxide poisoningLead poisoningMercury poisoningOxygen toxicity

Question 2: This reduces the ________ percentage, as well as allowing for a greater number of multiple dives vs "standard" air.
NitrogenOxygenHydrogenHelium

Question 3: Technical divers therefore increase their supply of available breathing gas by either connecting multiple high capacity ________ and/or by using a rebreather.
Technical divingDiving cylinderGas blendingScuba diving

Question 4: A diver at the end of a long or deep dive may need to do decompression stops to avoid ________, also known as the "bends".
BarotraumaOxygen toxicityDecompression sicknessAir embolism

Question 5: Recent entries into the market include Unified Team Diving (UTD), and Diving Science and Technology (DSAT), the technical arm of ________ (PADI).
Professional Association of Diving InstructorsDecompression stopRecreational divingScuba diving

Question 6: Most technical divers breathe enriched oxygen ________ mixtures such as nitrox during the beginning and ending portion of the dive.
RebreatherBreathing gasScuba divingDecompression sickness

Question 7: Increasing pressure at depth also increases the risk of oxygen toxicity based on the ________ of oxygen in the breathing mixture.
ChemistryVapor pressurePartial pressureNitrogen

Question 8: Increasing pressure due to depth also causes nitrogen to become narcotic, resulting in a reduced ability to react or think clearly (see ________).
Oxygen toxicityNitrogen narcosisScuba divingDecompression sickness

Question 9: Technical dives may also be defined by the use of hypoxic ________ mixtures other than air such as trimix, heliox, and heliair.
Scuba divingBreathing gasDecompression sicknessRebreather

Question 10: To avoid ________ while at maximum depth it is common to use trimix which adds a percentage of helium replacing nitrogen to the diver's breathing mixture.
Scuba divingDecompression sicknessNitrogen narcosisOxygen toxicity







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