Which of the following statements about Class A foam concentrates is MOST accurate?
A. Class A foam is used for structural fires, but is not suitable for wildland fires.
B. Class A foam is used to prevent ignition of fires involving flammable and combustible liquids.
C. Class A foam reduces the surface tension of water, allowing better water penetration into the fuel.
D. Class A foam concentrate coats and protects application equipment; equipment should not be flushed after use.
C
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Which of the following is the most appropriate action when performing ear irrigation on an adult?
a. Tilt the head to the affected side and backward. b. Straighten the auditory canal by pulling the auricle back and up. c. Straighten the auricle by pulling back and down. d. Use about 10 cc of irrigating solution each time. e. Direct the flow of the solution straight to the back of the canal.
All elixirs contain:
A) ionized water B) a bitter flavor C) alcohol D) isotonic solutions