单词：available-chlorine method
单词：available-chlorine method 相关文章
For quick relief of upset stomach or acid indigestion caused from too much to eat or drink, drop two tablets in an eight-ounce glass of water. Make sure that the tablets have dissolved completely befo
知性英语
Friends who had a swimming pool also had a little sign posted that said, We dont swim in your toilet. Please dont pee in our pool. Despite such widespread admonitions, four fifths of those questioned believe that their fellow swimmers are guilty of
60秒科学
ENVIRONMENT REPORT - November 1, 2002: Shrinking Ozone Hole over Antarctica By Cynthia Kirk This is the VOA Special English ENVIRONMENT REPORT. Australian researchers say the hole in the ozone layer o
健康与环境
This is Scientific Americans 60-second Science, Im Steve Mirsky, got a minute? Friends who had a swimming pool also had a little sign posted that said, We dont swim in your toilet. Please dont pee in our pool. Despite such widespread admonitions, 4/5
Scientific American(五)月
1. Thousands of war protesters converged on Washington today. They marched from the Vietnam War Memorial to the Pentagon to observe the 4th anniversary of the start of the war in Iraq. 2. Meanwhile the violence continues in Iraq. The military says t
美联社新闻一分钟2007
By Margaret Besheer Baghdad 06 April 2007 Iraqi officials say a suicide bomber has detonated a truck filled with explosives and chlorine gas near the western Iraqi city of Ramadi. At least 27 people were killed and dozens more injured and sickened. F
2007年VOA标准英语（四月）
By Jim Randle Baghdad 26 September 2007 U.N. health officials say there is a strong possibility that a cholera outbreak in Iraq that has already caused at least 11 deaths will spread to new areas of the country. But as VOA's Jim Randle reports from B
2007年VOA标准英语（九月）
Syrian Chemical Weapons Concerns 叙利亚化武问题 The second interim report by the Fact Finding Mission of the Organization for the Prohibition of Chemical Weapons, or OPCW, concludes that chlorine was almost certainly used as a weapon in attack
VOA标准英语2014年(十月)
UNICEF Airlifts Supplies to Liberia 联合国空运紧急救援物资到利比里亚 The U.N. childrens fund UNICEF has begun airlifting emergency supplies to Liberia, the country hardest hit by the West Africa Ebola epidemic. A cargo plane carrying
VOA标准英语2014年(八月)
AILSA CHANG, HOST: Scientists announced today that they have figured out the cause of an outbreak of Legionnaires' disease in Flint, Mich., a few years ago. Twelve people died. This was at the start of the city's water crisis. And the problem was a l
2018年NPR美国国家公共电台2月
Everybody loves the swimming pool. But how clean is the water in the average backyard or public pool? If you trust chlorine to take care of germs, you're in for a surprise. Chlorine and other disinfec
阅读空间
Scheele's one notable shortcoming was a curious insistence on tasting a little of everything he worked with, including such notoriously disagreeable substances as mercury, prussic acid (another of his discoveries), and hydrocyanic acida compound so f
万物简史
The commercial potential for the stuffwhich soon became known as phosphorus, from Greek and Latin roots meaning light bearingwas not lost on eager businesspeople, but the difficulties of manufacture made it too costly to exploit. An ounce of phosphor
万物简史
A new study in the journal Pediatrics found sodiumintake among kids ages 8 to 18 averaged 3387 mg aday, and those children with the highest levels of sodium consumption were twice aslikely to have elevated or high blood pressure. Rober Bazell reports
英语新闻视频
UNITED NATIONSThe U.N. Security Council unanimously agreed Friday to establish a joint investigation mechanism to identify perpetrators of chlorine and other toxic chemical attacks in Syria. It is the first time the council has sought to establish ac
英语新闻
By Margaret Besheer Irbil, Iraq 17 March 2007 In the volatile Western Iraqi province of Al-Anbar, suicide bombers driving trucks filled with chemicals struck at three different locations late Friday afternoon. U.S. military officials said Saturday at
2007年VOA标准英语（三月）
TAIYUAN, May 4 (Xinhua) -- Coca-Cola Shanxi Beverages Co. Ltd. on Friday announced the resignation of its general manager and the suspension of several employees after admitting traces of chlorine were found in some of its drinks. The company also ma
英语新闻
Change up your eating habits 改善饮食培养良好的饮食习惯 Can the Salt 远离罐头 Although canned vegetables retain the same nutrients as fresh vegetables, they also may come with something extra that could prove unhealthy. Canned vegeta
英语听力广播—Listening
Oxygen itself is not combustible; it merely facilitates the combus tion of other things. （氧本身是不可燃的，它只是帮助别的东西燃烧。 This is just as well, for if oxygen were corn bustible, each time you lit a match all the air
万物简史
文本： Max: Okay, time for some Chloe cosplay... Chloe: Hey, there you go! Rachel left a bunch of her clothes with me... She's your size. Max: But not quite my _(1)_ . Chloe: Max, you don't have a style yet. At least give it a try. You can always
小龟乐游记英语短文