A、satisfied engineers
B、qualified ratings
C、satisfied chief engineer
D、qualified chief engineer
更多“When deciding the composition of the engineering watch, which may include appropriately, many factors shall be taken into account（）.”相关的问题
A、When attacking the fire directly B、When using a steam smothering system C、When using the fixed CO2 system D、All of the above
A、contains 15 pounds of CO2 B、weighs 15 pounds when full of CO2 C、has 15 pounds of pressure at the nozzle D、weighs 15 pounds when empty
A、Check the tag to see when the extinguisher was last charged B、Release a small amount of CO2; if the CO2 discharges，the extinguisher is acceptable C、Weigh the extinguisher and compare the weight against that stamped on the valve D、Recharge the extinguisher at least once each year
A、there are fifteen pounds of CO2 in the container B、the container，when full，weighs fifteen pounds C、the pressure at the discharge nozzle is l5 psi D、the empty container weighs fifteen pounds
A、there are fifteen pounds of CO2 in the container B、the container，when full，weighs fifteen pounds C、the pressure at the discharge nozzle is l5 psi D、the empty container weighs fifteen pounds
A、gravity when the extinguisher is turned upside down B、pressure from a small CO2 cartridge on the extinguisher C、air pressure from the hand pump attached to the extinguisher D、pressure from the reaction when water is mixed with the chemical
A、gravity when the extinguisher is turned upside down B、pressure from a small CO2 cartridge on the extinguisher C、air pressure from the hand pump attached to the extinguisher D、pressure from the reaction when water is mixed with the chemical
A、A.stop ventilation to the area B、B.stop the vessel C、C.secure electricity to the circuit D、D.apply CO2 to the fire
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