单选题When approaching a fire from win ward, you should shield firefighters from the fire by using（）Alow-velocity fogBhigh-velocity fogCa straight stream of waterDfoam spray
单选题
When approaching a fire from win ward, you should shield firefighters from the fire by using（）
A
low-velocity fog
B
high-velocity fog
C
a straight stream of water
D
foam spray
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