题目内容

While only about 300 workers receive disablement benefit for industrial dermatitis every year, there may be between 15,000 and 60,000 new cases of this condition every year.

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在控制等级中，TCS是PLC的下级（）

Safety inspection

简述热加工变形的优点？

Every year, about 10 million of the 150 million workers in the European Community are affected by incidents,” accidents” or diseases at work.