燃气装配工安装，检查，维修和保养住宅，商业和工业机构的天然气管道和燃气设备，如仪表，稳压器和供热单位。
Gas fitters install, inspect, repair and maintain gas lines and gas equipment such as meters, regulators and heating units in residential, commercial and industrial establishments.
如果你的住宅或商业大楼里有这类移动设备，你有责任确保及时的专业检查。
If you own this mobility equipment at your residential or commercial building, it is your responsibility to ensure timely professional inspection.
当你要为住宅和商业电梯进行检查的时候，请确保你的经销商能安排有执照的检查员进行检查。
When it comes to elevator inspections for residential and commercial elevators, ensure that your dealer arranges for licensed inspectors to carry them out.
为了评价现有住宅中安全措施的有效性，本文提出了一种安全审计的检查清单。
A safety audit checklist for assessing the effectiveness of safety measures in existing residential buildings is also presented.
为了评价现有住宅中安全措施的有效性，本文提出了一种安全审计的检查清单。
A safety audit checklist for assessing the effectiveness of safety measures in existing residential buildings is also presented.
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