【单选题】
在狭小空间长时间作业，当无法使用个人携带式空气呼吸器时，应使用移动式供气源。___
A. 正确
B. 错误
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A
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【单选题】
抢险救援事故现场有易燃易爆气体或有毒有害物质扩散时，消防车要选择上风方向或侧上风方向的适当位置停靠，使用下风方向的水源；在扩散区上风、侧上风方向选择进攻路线接近扩散区。___
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室外消火栓应沿着道路布置，宽度超过60m的道路，为避免水带穿越道路影响交通或被车辆轧压，宜将消火栓在道路两侧布置，为方便使用，十字路口应设有消火栓。___
A. 正确
B. 错误
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