【多选题】【消耗次数：1】
项目负责人应根据施工中( )，进行相应的安全控制。
①
人的不安全行为
②
物的不安全状态
③
安全费用
④
管理的缺陷
⑤
作业环境的缺陷
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【多选题】
安全检查是安全生产管理工作的一项重要内容，是安全生产工作中发现不安全状况和不安全行为的有效措施，是（）的重要手段。
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消除事故隐患
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改善劳动条件
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落实整改措施
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做好安全技术交底
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防止伤亡事故发生
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