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You are here: home->pvt_plt->H427->5.3.8.8.5.A.1
3885
Why should propane tanks not be refueled in a closed trailer or truck?
| * | A) Propane vapor is one and one-half times heavier than air and will linger in the floor of the truck or trailer. |
| | B) The propane vapor is odorless and the refuelers may be overcome by the fumes. |
| | C) Propane is very cold and could cause damage to the truck or trailer. |
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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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