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SamSjf SamSjf
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6 years ago
When applied to solid fuels, Class A foam blankets the fuel, controls flames, then:
 
  A. changes the pH of the water.
  B. expands at a ratio of 20-to-1.
  C. dissipates into the air, leaving no residue.
  D. breaks down, releasing water to cool the fuel.
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