Flame screens are used to（）.<br>A:contain flammable fumes<br>B:protect firefighters from flames<br>C:prevent flames from entering tanks<br>D:keep flames and sparks from getting out of an engine's exhaust system

Flame screens are used to（）.
A:contain flammable fumes
B:protect firefighters from flames
C:prevent flames from entering tanks
D:keep flames and sparks from getting out of an engine's exhaust system

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