单选题A fixed CO2 system on a ship with a capacity of over 300 lbs (136 kilograms) CO2 which protects spaces other than tanks must have（）.Atwo or more releasing stationsBautomatic release in event of a fireCan audible alarm and time delayDan audible and visible alarm
单选题
A fixed CO2 system on a ship with a capacity of over 300 lbs (136 kilograms) CO2 which protects spaces other than tanks must have（）.
A
two or more releasing stations
B
automatic release in event of a fire
C
an audible alarm and time delay
D
an audible and visible alarm
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