6. Finished foam that has a shorter drain rate indicates foam with:
A. Drainage rate
B. Expansion rate
C. Finished rate
D. Mixing rate
7. Class A fires typically will require which type of foam?
A. Low expansion foam
B. Mid expansion foam
Answer (2)
A shorter drain rate indicates foam with a drainage rate, which means it retains liquid longer. Class A fires typically require low expansion foam to effectively combat ordinary combustibles. Understanding these characteristics is essential for effective fire suppression. ;
A shorter drain rate indicates foam with a drainage rate, and Class A fires typically require low expansion foam for effective suppression. Thus, the selected answers are A for both questions.
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