【判断题】
放空前需对放空区域进行辨识，不需要进行评价。[1分]
A. 对
B. 错
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答案
B
解析
暂无解析
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【判断题】
两个及以上单位（包括管道企业自身）在输气管道现场从事交叉作业，必须书面明确交叉作业安全措施，并由管道企业对各方工作负责人进行安全交底，并要求各方安排专门监护人在现场履行对交叉作业的组织协调和监督监护职责。[1分]
A. 对
B. 错
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