单词：naphthenic content of oil
单词：naphthenic content of oil 相关文章
Welcome to This I Believe, an NPR series presenting the personal philosophies of remarkable men and women from all walks of life. For our series This I Believe, we receive thousands of essays from young people. Today we hear from one of them. Kamaal
2007年NPR美国国家公共电台
Facebook published detailed guidelines Tuesday for what users can and cannot post on the social media service. Earlier this month, lawmakers called on Facebook chief Mark Zuckerberg to appear in Congress. They demanded that his company take more step
2018年VOA慢速英语(四)月
The price of oil has dropped around 20 percent in recent weeks, but remains more than double what it was just a couple of years ago. The high price has given oil companies the incentive to revisit old fields long ago abandoned as unprofitable. As VO
VOA标准英语2008年（八月）
The Macondo well operated by BP in the Gulf of Mexico has now been capped with a star adornment that commemorates the 11 people killed when the rig operating on the water surface above the site exploded on April 20. Clean-up efforts continue, though,
VOA标准英语2010年(十一)月
By Sarah Simpson Lagos 15 June 2007 Military officials say gunmen have abducted more foreign nationals working in Nigeria's oil-rich Niger Delta. News of the hostage-takings come a day after the release from prison of a prominent militant leader, hai
2007年VOA标准英语（六月）
The price of oil has hit an all-time high in London, rising above $146 a barrel, with New York crude prices not far behind. Tendai Maphosa reports for VOA from London analysts do not see an end to the price increases anytime soon. Oil well pumps The
VOA标准英语2008年（七月）