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
2023-07-01
73
管理
问题
(22)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.(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(泥土). 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:http://tihaiku.com/zcyy/2799475.html
相关试题推荐
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:IjustreceivedanE-mailfromoneofmyformerclassmates.I
[originaltext]M:IjustreceivedanE-mailfromoneofmyformerclassmates.I
[originaltext]M:IjustreceivedanE-mailfromoneofmyformerclassmates.I
[originaltext]M:IjustreceivedanE-mailfromoneofmyformerclassmates.I
随机试题
From:GemmaHutchison,GMOTo:PaoloSantos,HiltonFinancialSubject:Delivery
Father’sDayisacelebrationhonoringfathersandcelebrating【B1】______,pa
Itcanbeinferredfromthefirstparagraphthatlongtimeagomanypeopledidn
A.了解肾上腺皮质功能 B.判断皮质醇增多症的病因 C.单纯性肥胖与皮质醇增
材料: 下面是某教师在《雅典的民主政治》一课中的课堂活动。 活动主题:评选“
________isnotaminimalpairinEnglish
共用题干 护士小李上班后需对术前的病人进行肌内注射。不需要洗手的情况是A:护
张老师经常带着孩子做模仿游戏,很受欢迎。有一天,老师做了一个很复杂的动作,很多孩
净额清算方式的主要优点有()。 A.防止买空卖空行为的发生B.减少资金在交
关于工程进度款的结算与工程量计量的说法,正确的是()。A.发包人按约定时间应扣回
最新回复
(
0
)