MCQOPTIONS
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| 1. |
For private aircraft operating in the US, the crew is required to use oxygen masks if the cabin altitude stays above __________ for more than 30 minutes. |
| A. | 12,000 feet |
| B. | 50,000 feet |
| C. | 25,000 feet |
| D. | 20,000 feet |
| Answer» B. 50,000 feet | |