Engine_2014 : Engineering Safety - 1891/2355
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| When taking on fuel it is important to remember that petroleum vapors are __________ . |
| A) not volatile unless the ambient air temperature exceeds 90°F |
| B) lighter than air and dissipate rapidly |
| C) unlikely to ignite except in the presence of an open flame |
| D) heavier than air and may enter the bilges and/or deckhouse |
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