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You are here: home->pvt_plt->H427->2.3.3.5.4.A.1
3354
On cold days, it may be necessary to preheat the propane tanks because
| * | A) the temperature of the liquid propane controls the burner pressure during combustion. |
| | B) there may be ice in the lines to the burner. |
| | C) the propane needs to be thawed from a solid to a liquid state. |
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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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