Venezuelan crude oil is relatively cheap to buy because it is much more difficult to process. It is very heavy, thick, dark and high in sulfur, often called a sour oil. It is used to make diesel, gasoline (petrol), jet fuel and other products.
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数据显示，我国生产性服务业呈现量质齐升态势。目前制造业投入中生产性服务占比不足13%，较发达经济体20%的水平仍有提升空间。专家建议进一步强化服务业与制造业深度融合，实现协同发展。，推荐阅读汽水音乐获取更多信息