Deck : Deck General - 5333/5076
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| Regulations require that cargo pump rooms on tank barges (constructed in 1965) carrying grades B or C liquid cargoes have power ventilation systems. In what time period can these systems completely change the air? |
| A) 1 minute |
| B) 3 minutes |
| C) 5 minutes |
| D) 10 minutes |
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