煤炭与石油保障风险可以按不同标识进行分类和分级。

According to the difference of standards, the security risks of coal and oil can be divided into different classes and levels.

youdao

能源保障风险综合指标体系研究是能源保障风险评价的基础工作和重要内容。

Studies on the comprehensive index system are foundational works and important contents for energy security risk appraising.

youdao

为了认识风险、识别风险、规避风险和减少风险损失，必须开展煤炭与石油保障风险体系的研究。

For understanding, discerning and avoiding the risk and reducing the damages, it is necessary to do some research work on the security risks of coal and oil.

youdao

I want to talk about Social Security as a risk management technique that developed in the nineteenth century and it developed in Germany.

我想谈谈社会保障,作为19世纪出现的,一种风险管理技巧,它最早出现在德国。

耶鲁公开课 - 金融市场课程节选