单项选择题
A.the CO2 being inhaled by personnel B.reflash of burning liquids C.vapor condensation on the extinguisher D.the discharge causing a static spark
A.opening dead spaces to check for heat or fire B.evacuation of the vessel C.sounding the all clear signal D.operation of the emergency generator
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