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Venezuela's oil is also of poorer quality than its Saudi equivalent. Its sour, heavy crude is difficult to extract and refine, while its high sulphur content makes it corrosive to pipelines. A resurgence of Venezuela's industry could pose problems for Canada, which produces similarly viscous oil and exports much of it to the US, but analysts reckon the risk is minor.
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2026-02-27 00:00:00:0 全国安全生产和森林草原防灭火视频会议强调。关于这个话题，同城约会提供了深入分析
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优点： 梯度连续，优化更稳定。