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关注：1
2013-05-23 12:21
求翻译：在坑、沟、井内挖掘施工时，必须保证通风良好。如发现有毒气体或氧气不足时，应停止作业，采取有效措施后，方可继续施工。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
在坑、沟、井内挖掘施工时，必须保证通风良好。如发现有毒气体或氧气不足时，应停止作业，采取有效措施后，方可继续施工。
问题补充： |
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2013-05-23 12:21:38
Pits, trenches, wells tap the construction must be well ventilated. Such as the discovery of toxic gases or oxygen deficient, they should stop the operation, and take effective measures before they are allowed to continue with the work.
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2013-05-23 12:23:18
In pits, trenches, pits excavations is necessary to ensure that good ventilation. If discovery of toxic gases or lack of oxygen, should be put out of operation, and to take effective measures to continue after the construction.
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2013-05-23 12:24:58
When the pit, the ditch, the well excavate the construction, must guarantee ventilates good.If discovered when virulent gas or oxygen insufficiency, should stop the work, after takes the effective action, only then continues to construct.
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2013-05-23 12:26:38
When construction of mining in the pit, ditch, well, you must provide proper airflow. If the toxic gases or oxygen is low, should stop the job and take effective measures, to continue construction.
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2013-05-23 12:28:18
We keep the city clean is paramount
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