...air-quality testing twice yearly; removal of asbestos-containing materials from areas in which they might be disturbed due to maintenance or renovation work ; and use of duly licensed contractors for testing and removal, which always took place outside working hours 此类措施包括定期 的 实际检查;每年两次完全质量测试;从由于维护或翻修工程而可能触动 的 区域消除含石棉材料;以及利用经正式许可 的 承包商进行测试和消除 工作 ,这些 工作 始终在下...
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