单项选择题
A.removing the heat B.removing the oxygen C.removing the fuel D.interrupting the chain reaction
Control valves of a CO2 system may be located within th...
单项选择题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
CO2 cylinders，which protect the small space in which th...
单项选择题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
CO2 cylinders equipped with pressure actuated discharge...
单项选择题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
