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单选题
Operation of the valve control release on a fixed CO2 system must immediately（）.
A
release CO2 to the protected space
B
secure all mechanical ventilation in the protected space
C
sound the rig's general alarm signal for a fire
D
sound an alarm in the ballast control room
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考题
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release CO2 to the protected spaceB
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考题
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单选题In order to release CO2 to the machinery spaces from a fixed fire extinguishing system, you must（）.A
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考题
单选题Actuating the CO2 fixed system causes the shutdown of the（）.A
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exhaust ventilationC
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考题
单选题You are discharging cargo and the inert gas system is in operation to inert the tanks. The pressure in a tank being discharged starts to drop below the allowable limit. What action should you take? （）A
Cut in another IG fan to increase gas flowB
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考题
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单选题A crew member reports that the high-pressure alarm light of a low-pressure CO2 fixed fire extinguishing system is illuminated. The most probable cause of this condition would be that（）.A
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考题
单选题Your vessel is equipped with a fixed CO2 system and a fire main system. In the event of an electrical fire in the engine room what is the correct procedure for fighting the fire?（）A
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考题
单选题Control valves of a CO2 system may be located within the protected space when（）.A
it is impractical to locate them outsideB
there is also a control valve outsideC
the CO2 cylinders are also in the spaceD
an automatic heat-sensing trip is installed
考题
单选题While on watch in the engine room, you hear a continuous sounding of the general alarmWhich of the following actions should you take FIRST?（）A
Secure the burners then proceed to your assigned boat stationB
Start the fire pump and establish flow to the fire mainC
Open the guardian valve and standby to maneuverD
Open the master control valves on the fixed CO2 system
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