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You are here: home->pvt_plt->H418->5.3.9.1.0.A.1
3910
It may be possible to make changes in the direction of flight in a hot air balloon by
| | A) flying a constant atmospheric pressure gradient. |
| * | B) operating at different flight altitudes. |
| | C) operating above the friction level, if there is no gradient wind. |
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Anonymous says: |
17 Sep 2008 |
The explanation should read: The wording of the question is misleading. As currently stated with the word 'category' being singular, the answer would be [B] because the listed classes are all in one category. If the question were stated "... which are categories of aircraft?" the correct answer would be [A] because these are all separate categories of aircraft.
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