單項選擇題

Control valves of a CO₂ system may be located within the protected space when（）.

A.it is impractical to locate them outside
B.there is also a control valve outside
C.the CO₂ cylinders are also in the space
D.an automatic heat-sensing trip is installed

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單項選擇題

CO₂ cylinders，which protect the small space in which they are stored must（）.

A.NOT contain more than 200 pounds of CO₂
B.be automatically operated by a heat actuator
C.have an audible alarm
D.All of the above

單項選擇題

CO₂ cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.

A.the discharge valve is open
B.the control box glass is broken
C.pressure from the control cylinders is detected
D.the control cylinders have been completely discharged

Control valves of a CO2 system may be located within the protected space when（）.

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CO2 cylinders，which protect the small space in which they are stored must（）.

CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.

Control valves of a CO₂ system may be located within the protected space when（）.

CO₂ cylinders，which protect the small space in which they are stored must（）.

CO₂ cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.