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單項選擇題

Which types of portable extinguisher should you watch for the reflash of the fire?（）

A.foam and water
B.CO₂ and dry chemical
C.dry chemical and water
D.foam and CO₂

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單項選擇題

A portable foam fire extinguisher is placed in operation by（）

A.turning it upside down
B.pressing the foam lever
C.squeezing the grip handle
D.opening the hose valve

單項選擇題

Before you begin administering artificial respiration, you should be sure the victim（）

A.is comfortable
B.is warm
C.is not bleeding
D.has a clear airway