首页
登录
职称英语
Until the invention of the modern washing machine, most people washed their
Until the invention of the modern washing machine, most people washed their
游客
2023-07-06
60
管理
问题
Until the invention of the modern washing machine, most people washed their clothes by hand. In the 20th century, however, washing machine became common, and washing clothes became much easier. Washing machines, though, have some serious disadvantages. One is that they need a great deal of clean water. Another is that, in many countries, hot water is used in the machines. This consumes a lot of energy. In the United Kingdom, for example, about one-third of household energy is used for heating water, including that used to wash clothes.
Now, a British company has invented a washing machine that solves these problems by using small plastic beads to absorb dirt and clean the clothes. First, a little water is added to the clothes to get them wet. Then, the beads are mixed with the clothes until they have taken away all the dirt and stains. When the process is over, the little beads are removed by the machine, and the clothes are left almost dry. Because the beads can be used over and over, the machine costs very little to operate.
The new machine is based on the research of Stephen Burkinshaw, a chemist at the University of Leeds in the U.K. For a long time, Burkinshaw has been studying ways to make plastic materials a different color. A few years ago, he noticed that many kinds of plastic, especially nylon, attract dirt in warm and wet conditions, the surface of the nylon remains clean. For this reason, beads made of nylon can be used repeatedly until they are completely full of dirt.
The new washing machine can save households a great deal of the money they spend on water and energy. At the same time, the machines are very good for the environment. The United States, for example, uses 1.25 billion metric tons of water on washing clothes every year. If the new machines were adopted there, 90 percent of this water could be saved. The saving of electricity, meanwhile, would help decrease the amount of carbon dioxide produced by power plants. For these reasons, the company is hoping that its new "waterless" washing machines will be widely used in the future. [br] What did Stephen Burkinshaw learn about nylon?
选项
A、It absorbs dirt from other objects in certain conditions.
B、It causes other plastic objects to stick to wet clothes.
C、It can be made into clothes that can be washed very easily.
D、It changes color when it comes into contact with dirty clothes.
答案
A
解析
细节题。文章第三段指出…nylon,attract dirt in warm and wet conditions…故答案为A。
转载请注明原文地址:https://tihaiku.com/zcyy/2811805.html
相关试题推荐
Whenyourfamilywantstobuyorreplaceacar,atelevision,orawashingm
Whenyourfamilywantstobuyorreplaceacar,atelevision,orawashingm
Whenyourfamilywantstobuyorreplaceacar,atelevision,orawashingm
[originaltext]Mostpeoplefeellonelysometimes,butitusuallyonlylasts
[originaltext]Mostpeoplefeellonelysometimes,butitusuallyonlylasts
[originaltext]Shypeopleoftenavoidsituationsthatforceclosecontactwi
Volumeshavebeenwrittenabouttechnology’sabilitytoconnectpeople.But
Volumeshavebeenwrittenabouttechnology’sabilitytoconnectpeople.But
Volumeshavebeenwrittenabouttechnology’sabilitytoconnectpeople.But
[originaltext]Withgrowingnumbersofpeoplelivingalone,eitherbychoice
随机试题
[originaltext]W:Mr.Stern,mayIaskyou?Doyouthinkitwasnecessaryandfa
阅读孟子《寡人之于国也》中的一段文字。 不违农时,谷不可胜食也;数罟不入海池,
下列有关节水系统设计的叙述中,错误的是哪项?( )A.生活给水系统应充分利用城
根据《证券投资顾问业务暂行规定》,下列关于证券公司、证券投资咨询机构提供证券投资
集团客户具有的特征包括()A.在股权上或者经营决策上直接或间接控制其他企事业法
(2021年真题)债券信用评级的对象包括() Ⅰ.经中国证监会依法注册发行
喜马拉雅山是目前地球上最高的山脉。其顶峰珠穆朗玛峰高达8848米,堪称世界之最。
忠实与通顺,作为翻译的标准,应该是统一的整体,不能把两者割裂开来。与原意()的文
建设工程施工和施工管理的最后环节是( )。A.竣工验收 B.竣工决算 C.
加强宪法实施和依宪治国,对中国特色社会主义法治体系、社会主义法治国家的建设具有重
最新回复
(
0
)