首页
登录
职称英语
[originaltext] (22)A few degrees can make a big difference when it comes to
[originaltext] (22)A few degrees can make a big difference when it comes to
游客
2024-01-27
20
管理
问题
(22)A few degrees can make a big difference when it comes to food storage. Food can so 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. (23) 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" or "Cooling System." It uses two round containers made of clay (黏土). A smaller pot is placed inside a larger one. The space between the two 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. (24) Food in the smaller pot is kept from spoiling through a simple evaporation process. Water in the sand between the two 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. The invention became popular with farmers in other African countries. (25)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.
22. What is an important factor in food storage?
23. Why does the speaker say spoiled food can create economic losses?
24. How does the pot-in-pot system work?
25. What can we learn about Mohammed Bah Abba?
选项
A、By electricity.
B、Through an evaporation process.
C、Through a freezing process.
D、With the help of some special bacteria.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3399821.html
相关试题推荐
[originaltext]Anewstudywarnsthatabout30%oftheworld’speoplemayno
[originaltext]Anewstudywarnsthatabout30%oftheworld’speoplemayno
[originaltext]Whenmyinterestshiftedfromspacetothesea,Ineverexpec
[originaltext]Whenmyinterestshiftedfromspacetothesea,Ineverexpec
[originaltext]Whenmyinterestshiftedfromspacetothesea,Ineverexpec
[originaltext]Whenmyinterestshiftedfromspacetothesea,Ineverexpec
[originaltext]W:Goodmorning.WhatcanIdoforyou,sir?M:Goodmorning.I’v
[originaltext]W:John,haveyouchosenaphysicaleducationclassyetforthis
[originaltext]W:John,haveyouchosenaphysicaleducationclassyetforthis
[originaltext]Newtougheralcoholguidelineshavebeenpublishedwhichredu
随机试题
[audioFiles]2018m3x/audio_ezfj_ezflisteningd_201803_166[/audioFiles]SnackC
Educatorsknowthatteachingstudentstowritewellisnoteasy.Oneproblemi
在药物定量分析方法中,属于仪器分析法的是A.亚硝酸钠法 B.酸碱滴定法 C.
精液中水分的含量约为:()A.50% B.70% C.80% D
为防止油浸式互感器损坏事故,应加强电流互感器末屏接地引线()。(A)检查
下列选项中,可以适用不当得利主张请求权的情形是( )。 A.甲为自己正在读大
俄国的两位大作家,都情不自禁地对莎士比亚发表了自己的看法。屠格涅夫借批评哈姆雷特
根据税收征收管理法规,关于税务登记,下列哪一说法是错误的?()A.从事生产、经
关于施工企业确定工程成本核算对象的说法,正确的是( )。A.通常以单项建造合同
阑尾的位置最多见于( )。A.盲肠后 B.回肠后 C.回肠前 D.盲肠下
最新回复
(
0
)