Engine_2014 : Engineering Safety - 655/2355
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| Fire doors are released by a/an __________ . |
| A) hydraulic directional valve that automatically releases the door in the event of a disruption to the control power system |
| B) spring-loaded catch that automatically lifts to release the door in the event of the presence of a fire |
| C) method that automatically releases the door in the event of a disruption of control system power |
| D) pneumatic heat sensor |
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