单词：high rate filtration
单词：high rate filtration 相关文章
Beijing will launch a pilot program to equip schools and kindergartens with air filtration devices. Smog has been a significant issue in the Chinese capital this winter. I was coughing just now, I always wear mask, from school to home. The air is cho
2017CRI中国国际广播电台
By Jeff Swicord Howard County, Maryland 18 May 2006 watch School Drop Out report It is estimated between 15 and 30 percent of high school students in the U.S. will not graduate. And among some minorit
2006年VOA标准英语（五月）
Education Report - High Dropout Rate a Problem for South Africa This is the VOA Special English Education Report. Since the nineteen nineties, education has been required for all South Africans from age seven to fifteen. Last December, the government
2012年VOA慢速英语(三)月
More than three years after Hurricane Katrina caused massive damage in New Orleans, the city has less than half its pre-hurricane population and a crime rate higher than any other city in the nation. But, as VOA's Greg Flakus reports, citizens' grou
VOA标准英语2008年(十二月)
Today the Governor of the Reserve Bank, Dr Alan Bollard, lowered the official cash rate (OCR) to 2.5%. This is down 50 points from the 12th March. It is also a huge change from July last year when the OCR was at a high point of 8.25%. In July 2007, t
新西兰英语
NEW YORK, Dec. 27 (Xinhua) -- New York City Mayor Michael Bloomberg announced on Tuesday that babies born in the city in 2009 have the record high life expectancy of 80.6 years, an increase of nearly three years since 2000. The rate of 80.6 years is
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