Deck : Safety - 728/2841
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| Spaces protected by a fixed CO2 system must be equipped with an alarm which sounds __________. |
| A) during the entire period that CO2 is being released |
| B) for at least 20 seconds prior to release of CO2 |
| C) if all doors and ventilation are not secured |
| D) for the first 20 seconds CO2 is being released into the space |
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