首页
登录
职称英语
A few degrees can make a big difference when it comes to food storage. Foods
A few degrees can make a big difference when it comes to food storage. Foods
游客
2023-06-29
38
管理
问题
A few degrees can make a big difference when it comes to food storage. Foods can go bad if they get too warm. But for many of the world’s poor, finding a good way to keep food cool is difficult. Refrigerators are costly and they need electricity.
Yet spoiled food not only creates health risks but also economic losses. Farmers lose money when they have to throw away products that they cannot sell quickly.
But in 1995 a teacher in northern Nigeria named Mohammed Bah Abba found a solution. He developed the "Pot-in-Pot Preservation/Cooling System." It uses 2 round containers made of clay. A smaller pot is placed inside a larger one.
The space between the 2 pots is filled with wet sand. The inner pot can be filled with fruit, vegetables or drinks. A wet cloth covers the whole cooling system.
Food stored in the smaller pot is kept from spoiling through a simple evaporation process. Water in the sand between the 2 pots evaporates through the surface of the larger pot, where drier outside air is moving.
The evaporation process creates a drop in temperature of several degrees. This cools the inner pot and helps keep food safe from harmful bacteria. Some foods can be kept fresh this way for several weeks.
People throughout Nigeria began using the invention. And it became popular with farmers in other African countries. Mohammed Bah Abba personally financed the first 5,000 pot-in-pot systems for his own community and five villages nearby.
In 2000, the Rolex Watch Company of Switzerland honored him with the Rolex Award for Enterprise. This award recognizes people trying to develop projects aimed at improving human knowledge and well-being.
A committee considers projects in science and medicine, technology, exploration and discovery, the environment and cultural history. Winners receive financial assistance to help develop and extend their projects.
The award is given every 2 years. The most recent one was given last year. [br] In Mohammed Bah Abba’s cooling system, the evaporation process is used to_____.
选项
A、prevent the loss of water
B、cause dry and wet air to exchange
C、keep the stored food dry
D、take heat away from the inner pot
答案
D
解析
第5段和第6段的内容表明“蒸发过程”可以使里面的小罐子温度降低,从而起到冷藏、保存食物的目的,D“将热量带走”也就意味着“温度降低”,两者的意义相同,因此,本题应选D。
转载请注明原文地址:https://tihaiku.com/zcyy/2791954.html
相关试题推荐
Afewdegreescanmakeabigdifferencewhenitcomestofoodstorage.Foods
Afewdegreescanmakeabigdifferencewhenitcomestofoodstorage.Foods
Afewdegreescanmakeabigdifferencewhenitcomestofoodstorage.Foods
Afewdegreescanmakeabigdifferencewhenitcomestofoodstorage.Foods
ArebooksandtheInternetabouttomerge?A)Thedifferencebet
ArebooksandtheInternetabouttomerge?A)Thedifferencebet
ArebooksandtheInternetabouttomerge?A)Thedifferencebet
ArebooksandtheInternetabouttomerge?A)Thedifferencebet
ArebooksandtheInternetabouttomerge?A)Thedifferencebet
ArebooksandtheInternetabouttomerge?A)Thedifferencebet
随机试题
[originaltext]W:Mygoodness!Lookatthewindtoday.IwishI’dtakenanextra
Northernlightsisthenameofalightphenomenonoftenseeninthenorthern
前响复韵母是()A.ɑi、ei、uɑ、uo B.ɑi、ei、ɑo、ou C
关于散剂特点的说法,正确的是:A.粒径小、比表面积小 B.不易分散、起效慢
吸光度(A)与透光度(T)之间的关系是A.A=1/T B.A=-1gT C.
信用贷款是指以借款人信誉发放的贷款,其最大特点是()。A.借贷成本低 B.风险
下列哪种脉象主虚证A.滑 B.结 C.促 D.动 E.疾
A.相变温度 B.渗漏率 C.峰浓度比 D.注入法 E.聚合法药物制剂的
根据《政府采购法》的规定,采购人是指依法进行政府采购的国家机关、事业单位和团体组
施工现场发生安全事故后,首先应该做的工作是( )。A.进行事故调查 B.对事故
最新回复
(
0
)