首页
登录
职称英语
By the mid-nineteenth century, the term "icebox" had entered the American lan
By the mid-nineteenth century, the term "icebox" had entered the American lan
游客
2024-06-14
13
管理
问题
By the mid-nineteenth century, the term "icebox" had entered the American language, but ice was still only beginning to affect the diet of ordinary citizens in the United States. The ice trade grew with the growth of cities. Ice was used in hotels, taverns (酒馆), and hospitals, and by some forward-looking city dealers in fresh moat, fresh fish, and butter. After the Civil War( 1861-1865 ), as ice was used to refrigerate freight cars, it also came into household use. Even before 1880, half of the ice sold in New York, Philadelphia, and Baltimore, and one-third of that sold in Boston and Chicago, went to families for their own use. This had become possible because a new household convenience, the icebox, a precursor of the modem fridge, had been invented.
Making an efficient icebox was not as easy as we might now suppose. In the early nineteenth century, the knowledge of the physics of heat, which was essential to a science of refrigeration, was rudimentary (未发展的). The commonsense notion that the best icebox was one that prevented the ice from melting was of course mistaken, for it was the melting of the ice that performed the cooling. Nevertheless, early efforts to economize ice included wrapping up the ice in blankets, which kept the ice from doing its job. Not until near the end of the nineteenth century did inventors achieve the delicate balance of insulation and circulation needed for an efficient icebox.
But as early as 1803, and ingenious Maryland farmer, Thomas Moore, had been on the right track. He owned a farm about twenty miles outside the city of Washington, for which the village of Georgetown was the market center. When he used an icebox of his own design to transport his butter to market, he found that customers would pass up the rapidly melting stuff in the tubs of his competitors to pay a premium price for his butter, still fresh and hard in neat, one-pound bricks. One advantage of his icebox, Moore explained, was that farmers would no longer travel to travel to market at night in order to keep their produce cool.
选项
答案
Icebox.
解析
文章从头到尾都在讲icebox是如何产生的、其工作原理和优点,可见icebox是这篇文章的中心。
转载请注明原文地址:https://tihaiku.com/zcyy/3633513.html
相关试题推荐
Bythemid-nineteenthcentury,theterm"icebox"hadenteredtheAmericanlan
Whatwillhappeninthemiddleofthe21stcentury,ifweconsumeresourcesmuch
Whatwillhappeninthemiddleofthe21stcentury,ifweconsumeresourcesmuch
Whatwillhappeninthemiddleofthe21stcentury,ifweconsumeresourcesmuch
Whatwillhappeninthemiddleofthe21stcentury,ifweconsumeresourcesmuch
Whatwillhappeninthemiddleofthe21stcentury,ifweconsumeresourcesmuch
Bythemid-nineteenthcentury,theterm"icebox"hadenteredtheAmericanlan
WhatweretheeidersofcontemporaryAmericansquiteunfamiliarwith?[br]Accor
WhatweretheeidersofcontemporaryAmericansquiteunfamiliarwith?[br]Child
Forwelloveracentury,onestreetinNewYorkCityhasbeenknownfortheh
随机试题
What’sthepurposeoftheprograminMexico?[br][originaltext]Officialsi
Shefoundherselfina______withherparentsoverherfuturecareer.A、paradoxB、
[originaltext]M:HowmanystudentspassedtheCollegeEnglishTestlastterm?W
下列关于校核性测点的布置不正确的是( )。A、布置在零应力位置 B、布置在应
统计表的列标题表示各组的名称,一般应写在统计表的()。A.上方 B.第
某生会背诵九九乘法口诀并懂得“三三得九”就是3个3相加之和是9,这种学习属于__
在涉密岗位工作的人员,按照涉密程度分为( )类。A.3 B.4 C.5
共用题干 第二篇Eye-trackerLetsYouDragandD
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
甲、乙两公司属同一集团,甲公司为上市公司,2010年至2012年发生的与投资相关
最新回复
(
0
)