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单选题
Automatic fire dampers in ventilation systems are operated by a（）.
A
remote operated valve
B
fusible link
C
CO2 system pressure switch
D
heat or smoke detector
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单选题The ventilation system of your ship has fire dampers restrained by fusible links. Which statement is TRUE?（）A
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单选题A fire in the galley always poses the additional threat of（）.A
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contaminating food with extinguishing agentB
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单选题Convection spreads a fire as a result of （）.A
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