The disadvantage of using CO2 is that the（）. A:CO2 does not cool the fire B:cylinders are regulated pressure vessels C:C02 is not effective on class B fires D:C02 is not effective on class C fires

The disadvantage of using CO₂ is that the（）.
A:CO₂ does not cool the fire
B:cylinders are regulated pressure vessels
C:C0₂ is not effective on class B fires
D:C0₂ is not effective on class C fires

出自：海船船员证

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