Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to ________________.(1.0)
A.flashing point B.combustion point C.auto-ignition point D.lower explosive limit正确答案B
Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to ________________.(1.0)
A.flashing point B.combustion point C.auto-ignition point D.lower explosive limit正确答案B
