首页
登录
职称英语
[originaltext] By the mid-nineteenth century, the term "icebox" had entered
[originaltext] By the mid-nineteenth century, the term "icebox" had entered
游客
2023-12-29
57
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, and hospitals, and by some forward-looking city dealers in fresh meat, 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 refrigerator, 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. The common sense 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, an 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 have to travel to market at night in order to keep their produce cool.
选项
A、The freezing of the water.
B、The melting of the ice.
C、Wrapping up the ice in blankets.
D、Keeping air from coming into the ice-box.
答案
B
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3316796.html
相关试题推荐
ANewNationAtthebeginningofthe20thcentury,Australiawasanopen
Itismorethanaquarterofacenturysincetheleadersoftheworld,gather
MostoftheoldercivilizationswhichflourishedduringthefifthcenturyB.C.a
Intheeighteenthcentury,thetownofBennington,Vermont,wasfamousfor_____
Heisthemostintrepidexplorerinthepresentcentury.A、successfulB、fearless
Themoststrikingtechnologicalsuccessinthe20thcenturyisprobablythecomp
MostoftheoldercivilizationswhichflourishedduringthefifthcenturyB.C.a
Inthenineteenthcentury,poorEuropeansseekingtomaketheirfortunesturned
Initiallyactingasasportsannouncerinthe1930’s,RonaldReaganenterednati
Consideringtheirvastnumbersintheseventeenthcentury,notmuchsheeparerai
随机试题
IwishI______abletotellhimallaboutitlastnight.A、shouldbeB、wereC、had
出国留学,一般指一个人到另一个国家继续接受教育的行为。出国留学能够丰富知识、开阔视野,同时也可以培养人的独立性。如今,中国已成为世界上最大的留学生生源国
TheCommissionisexpectedtoproposeallowingpeopletochoosewhichlegal
有人说教书育人是老师的天职,你怎么看?
我国大陆第一部知识产权法律是()。A.《中华人民共和国商标法》 B.《
旁压试验,适用于是()。A.粘性土 B.砂土 C.碎石土 D.全风化岩
Thechangeinthatvillagewasmiraculou
2016年11月15日,派出所民警接病人家属求助赶赴现场,发现一名疑似精神病人在
A.龟甲 B.麦芽 C.花蕊石 D.厚朴 E.补骨脂处方直接写药名,需调
一切工程的计量工作都应在监理工程师在场情况下,由承包人测量,记录,有承包签名的计
最新回复
(
0
)