【单选题】
《攀枝花铁矿有限空间作业安全管理规定》(攀铁发[2019]123号)规定，有限空间作业现场安全监护人必须由___担任，与作业负责人不得为同一人，必须坚守岗位，不得擅自离岗。
A. 现场负责人
B. 作业小组成员
C. 班组长及以上的人员
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答案
C
解析
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矿业公司内部标准化以“管理标准化、现场标准化、作业行为标准化”为目标，以“__为管理基础，以__为操作思路，以__为作业标准、以__为现场确认”四位一体为具体手段，强力推进安全生产标准化工作。___
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机动车在高速公路行驶，以下哪种说法是正确的？___
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