Deck : Deck General - 1119/5076
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| The fresh air intake of the inert gas system _____, |
| A) prevents the flue gas from falling below an oxygen content of 3% |
| B) enables outside air to mix with and to cool the hot flue gasses |
| C) opens when there is excessive vacuum on the deck water seal |
| D) allows the inert gas piping to be used for gas freeing the tanks |
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