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
2023-09-10
82
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 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 modern fridge, had bean 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 coarse 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 have to travel to market at night in order to keep their produce cool. [br] What is the topic of the passage?
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/3002654.html
相关试题推荐
ACross-CulturalContext:Americans,Germans,andEnglish
ACross-CulturalContext:Americans,Germans,andEnglish
TheestablishmentoftheThirdReichinfluencedeventsinAmericanhistoryb
TheestablishmentoftheThirdReichinfluencedeventsinAmericanhistoryb
TheestablishmentoftheThirdReichinfluencedeventsinAmericanhistoryb
TheestablishmentoftheThirdReichinfluencedeventsinAmericanhistoryb
TheestablishmentoftheThirdReichinfluencedeventsinAmericanhistoryb
_______________(父母亲都觉得我不会被录用。“你要有后台才行”)"It’sanAmericanthing,RockefellerFou
UnitedStatesgovernment,andtheAmericanpeople.Itshistory,andthehist
UnitedStatesgovernment,andtheAmericanpeople.Itshistory,andthehist
随机试题
Owningamobilephonedefinitelymakeslifemoreconvenient,butyou’dbetterli
Thepriceofwheatissettinganall-timehighintheUnitedKingdom.Food【C
Itisnaturalforyoungpeopletobecriticaloftheirparentsattimesand
[originaltext] (5)TheauthoritiesintheAustralianstateofNewSouthWales
对于防病毒系统的测试是系统安全测试的重要内容,下列不属于防病毒系统安全测试基本测
积聚的基本病机是:A.肝络失和 B.湿邪壅阻中焦 C.气机阻滞,瘀血内结
关于基坑支护施工的说法,错误的是()。A、土方开挖的顺序、方法必须与设计工况相一
影响房地产价格的心理因素主要包括()。A.购买或出售心态 B.个人偏好
关于羊水栓塞产妇产科处理原则的陈述中,正确的是A.在第一产程发病者应鼓励其试产
建筑意外伤害保险期限应()。A.从施工工程项目被批准正式开工,并且投保人已
最新回复
(
0
)