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江西上饶保妥适多少钱美丽口碑

2019年10月22日 07:44:40|来源:国际在线|编辑:康泰媒体
瑞秋·波特斯曼谈到人“生来即知分享”--并展示了像Zipcar和Swaptree这样的网站正在改变人类的行为模式 Article/201503/365070Wang Jianlin#39;s wealth balloons on stock value hike王健林身家超李嘉诚亚洲首富又换人Chinese real estate tycoon Wang Jianlin is once again the richest man in Asia, surpassing Li Ka-shing, the most recent owner of the title.中国房地产大亨王健林超过李嘉诚再次成为亚洲首富。According to the Bloomberg rich list, Wang sits on US38.1 billion, making him the richest man in Asia and the 11th richest in the world.彭富豪榜显示王健林以381亿美元身家成为亚洲首富、全球富豪排行中居第11位。That is thanks to a continuous rise in the stock value of his listed assets:这是由于他的股价持续上涨的结果:Wanda Cinema Line and Wanda Commercial Properties, which expanded 74 percent and 33 percent respectively in April.4月份万达影视、万达商业地产分别增长74%和33%。 Article/201505/373583TED演讲集 那些匪夷所思的新奇思想 Article/201511/407031

I don#39;t think you see anything happening to you现在应该还没发生I#39;m still working on it我还在努力I#39;m getting tired here我有点累了Something happening?发生了什么吗Oh, my goodness, I could see myself哦,我的天,我可以看到我自己了Well, this is a real workout, I#39;ll tell you这个真的是太费体力了So what we#39;ve created here is a beautiful silver mirrored flask这里我们做成了一个银镜烧瓶So look at that看这个Dr. Dolhun has created a beautiful silver mirrorDolhun士做成了一个漂亮的银镜It almost looks like a Christmas tree ornament就像是圣诞树上的装饰品一样and a silver ornament could in fact be made this way银色装饰确实也可以这样做So here#39;s what#39;s happening这里情况是这样的Electrons from here, the glucose电子来自葡萄糖get transferred to the silver reducing it to silver 0被转移给银离子,将其还原为Ag?Silver 0 is insoluble in water. It#39;s just silver metal Ag?不溶于水,也就是银金属And it#39;s precipitating out on the inside of the flask它会沉淀到烧瓶内面forming the beautiful silver mirror that we see形成我们所看到的漂亮银镜Now this process is called reduction这个过程叫作还原And whenever something is reduced有东西被还原something else is oxidized就有东西被氧化So the glucose must be getting oxidized被氧化的必然是葡萄糖It becomes this它变成这个An oxygen was added here一个氧被加到这里Now this process is similar to metabolism in our bodies这个过程很类似于我们体内的代谢过程We remove electrons from the sugar we eat我们也会从吃下的糖中移除一个电子and transfer them to the oxygen that we breathe将其转移给我们呼入的氧气In a reduction reaction like ;mirror, mirror;;魔镜魔镜;这样的还原反应there might be energy released会释放出能量In your body, this energy is harnessed in chemical bonds人体内,这些能量会用化学键储存起来stored for later以便日后使用The point of Tollens test was not to produce silver mirrorsTollens测试的本身目的不是为了制造银镜although a similar reaction is used for that today虽然现在类似反应确实被用作这个用途The point was to distinguish between two types of sugars其本身目的是为了区分两种糖One is containing aldehydes and one is containing ketones一种中包含醛,一种中包含酮Let me draw those我画一下这些The difference is that in an aldehyde差别在于,醛中the carbon is connected to hydrogen碳是同氢相连的and in the ketone, the carbon is connected to another carbon而酮同,碳是和另一个碳相连的Aldehydes are more reactive than ketones醛比酮的反应性更强so they will react with the silver ions所以它们能同银离子反应while the ketones will not而酮则不能That#39;s it for me. Hopefully, you enjoyed this 就到这里吧,但愿大家喜欢这个视频And I will see you next time我们下次再见 Article/201501/352467

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