Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to（）.<br>A:flashing point<br>B:combustion point<br>C:auto-ignition point<br>D:lower explosive limit

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

出自：海船船员证

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