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- 49 Why are the lights inside commercial airplanes turned off during take off and landing?
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- 37 How are aircraft depainted?
- 37 Are there any vegetarian astronauts?
- 36 Why is the ladder of the LM always in the dark side of the LM?
- 34 Why is the rear seat ejected before the front one?
- 31 Why do passenger embark on the left side of an aircraft?
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