单选题Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.Asweep flames away with water sprayBshut off the leakCuse a chemical foam fire extinguisherDcall the local fire department
单选题
Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.
A
sweep flames away with water spray
B
shut off the leak
C
use a chemical foam fire extinguisher
D
call the local fire department
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