C.A machine which turns sweat into drinking water is invented.D.Water purifying pills are solutions to the water problem. 试题答案 在线课程 分析 本文属于科普说明文,介绍了一种能够把人的汗水变成清洁的饮用水的机器的工作原理以及人们对这一机器的看法. 解答 28.D.推理判断题.根据文章第三段The ...
And the machine will never be produced in large numbers, since there are better solutions out there such as water purifying pills.” 1.Which of the following is the disadvantage of the sweat machine? A. It takes too long for the machine to produce water. B. The amount of water the ...
Pig iron is generally too brittle (it breaks too easily) to be used in most products. Most scientists believe that the Earth's core consists largely of iron. A number of methods have been developed for purifying pig iron. A common method used today is called the basic oxygen process. ...
To safeguard the source also in the future, the drinking water company wants to construct additional storage basins and pre-purify the IJsselmeer water in a ‘purifying landscape’. What might such a landscape look like? Water Matters, like the trade magazine H2O, is an initiative of Royal ...
Another non-filter method of purifying backcountry water is to use aSteriPEN Water Purifier. Using ultraviolet light, SteriPENs kill bacteria, protozoa, and viruses. The water in a one-liter Nalgene bottle is purified in just ninety seconds. Because SteriPENs are battery dependent, it’s wise...
Because the sugar found in Vitaminwater or Coke is made from a refining (or purifying) process, it contains no nutrients or vitamins beneficial to our health. It instead acts only as a source of energy -- once anything with sugar is ingested, the sugar skips digestion by passing through ...
Steroid hormones use as sex steroids, contraceptives, and birth control pills can interfere with the endocrine systems, or act as anti-androgenic ligands [72,73]. Endocrine disruption leading to adverse effects such as sterilization, the imposition of sex organs (imposex), and feminization of some...
Make sure you use these bottles to take your pills and brush your teeth too. As a general rule, if you’re at all in doubt, take water filters with you. It’s Not Just What You Drink If the water is unsafe to drink, don’t brush your teeth with water from th...
If you really want to de-acidify your stomach (at the possible cost of interfering with protein digestion), why spend hundreds of dollars for an electrolysis device when you can take calcium-magnesium pills, Alka-Seltzer or Milk of Magnesia? Electrolysis devices are generally worthless for treat...
Water is most notable in religion for its cleanness and its purifying qualities and for its tremendous power, but Zena Kamash (2008) has recently emphasized its terrifying aspects. Floods, whirlpools and fast rivers kill countless people. Religions recognize this, and pray for protection, but als...