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
43
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
Kate:Hello.CouldIspeaktoJane,Please?Jane:_________A、Yes,youcould.B、Sp
Languageperformanceandlanguageacquisitionarethetwoprincipleconcerns
涂饰工程,是指将建筑涂料涂刷于构配件或结构的表面,并与之较好地粘结,以达到保护、
柔韧性练习至少每周2~3天,()拉伸大肌肉群,静力拉伸保持10~30秒。A.缓慢
盗汗的病理属性为A.血虚,湿 B.阳虚,痰 C.血虚,阴虚 D.阴虚,湿
与人参增强人体抗应激作用主要相关的药理作用是A.调节中枢神经功能B.调节下丘脑-
D
(2018年真题)借记卡的特点包括()。A.先存款后使用 B.可以凭借密
形式简单,能够有效地测量学生对知识联系的掌握情况,且易于计分的题型是()。
建设投资包括()A.工程费用 B.建设期利息 C.工程建设其他费用
最新回复
(
0
)