单选题The blocking or absence of fire dampers can cause（）.Athe accumulation of explosive gasesBfaster cooling of the fireCthe fire to spread through the ventilation systemDfixed foam systems to be ineffective
单选题
The blocking or absence of fire dampers can cause（）.
A
the accumulation of explosive gases
B
faster cooling of the fire
C
the fire to spread through the ventilation system
D
fixed foam systems to be ineffective
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