Engine : Expired / Engineering Safety - 182/275
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| When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent __________. |
| A) boiling of the heated oil |
| B) toxic fumes from escaping to the surface |
| C) air from contacting the oil vapors permitting reignition |
| D) spontaneous combustion below the oil surface |
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