单选题What is an advantage of using foam in fire fighting?（）AIt is MOST effective on very hot oil fires where the temperatures of the liquid exceed 100°C (212°F)BMost foams can be used with dry chemicals to attack a fire by two methodsCFoam is effective on combustible metal firesDFoam can be made with seawater or fresh water
单选题
What is an advantage of using foam in fire fighting?（）
A
It is MOST effective on very hot oil fires where the temperatures of the liquid exceed 100°C (212°F)
B
Most foams can be used with dry chemicals to attack a fire by two methods
C
Foam is effective on combustible metal fires
D
Foam can be made with seawater or fresh water
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