单项选择题
A.only when fully loaded B.if one or more tanks are full C.when transferring cargo D.only when the barge is being towed
Portable CO2 fire extinguishers should NOT be used to i...
单项选择题Portable CO2 fire extinguishers should NOT be used to inert a space containing flammable liquids due to the danger of（）.
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
Overhauling a fire in the living quarters on a vessel m...
单项选择题Overhauling a fire in the living quarters on a vessel must include（）.
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
Operation of the valve control release on a fixed CO2 s...
单项选择题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
