题目内容

关于油漆工消防管理描述正确的是( )。

A. 严禁明火
B. 通风良好,周围的动火作业要距离10米以外
C. 需要持证上岗
D. 应穿不宜产生静电的服装、鞋
E. 以上说法都不对

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1. What is the reason for people to trade?

2.Why can a great variety of goods and services be created in the process of importing and exporting?

3.Why can plants also benefit from international trade?

4.What does comparative advantage refer to?

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