· 电工作业
Electrician work
· 焊接与热切割作业
Welding and thermal cutting operations
· 高处作业
High-place operation
· 制冷空调作业
Refrigeration and air conditioning operation
· 煤气作业
The gas operation
· 危险化学品安全作业16项重点工艺
16 key processes for safe operation of hazardous chemicals
· 特种作业操作证安全员
Special operations security officer