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【单选题】
在施工现场的防火巡查中,发现 _,应当上报有关领导,制定限期改正措施。
A.
施工作业用火时没有领取用火证
B.
施工现场有吸烟现象
C.
宿舍内使用电炉
D.
施工现场使用的安全网是可燃材料
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