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.
В России ответили на имитирующие высадку на Украине учения НАТО18:04
，详情可参考搜狗输入法下载
Easy-to-use app available on all major devices including iPhone, Android, Windows, Mac, and more，推荐阅读雷电模拟器官方版本下载获取更多信息
Раскрыты подробности похищения ребенка в Смоленске09:27，详情可参考一键获取谷歌浏览器下载
Фото: Clodagh Kilcoyne / Reuters