The Federal Aviation Administration Limits the Number of Hours Flight $\backsim$

question 53

Multiple Choice

The Federal Aviation Administration limits the number of hours flight crews can be at high altitudes, $\backsim$ 10,000 m.One of the reasons is because

• A)the crews can suffer from altitude sickness.
• B)at high altitudes there are more gamma rays that can damage human tissues.
• C)at high altitudes the air is thinner so there is less oxygen.
• D)they do not want the crews to accrue too many frequent flyer miles.
• E)None of the above statements is correct.

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Definitions:

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