首页
登录
职称英语
By the mid-nineteenth century, the term "icebox" had entered the American la
By the mid-nineteenth century, the term "icebox" had entered the American la
游客
2024-02-28
43
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 (1860--1865), as ice was used to refrigerate fish in freight cars, it also came into household use. Even before 1880, half the ice sold in New York, Philadelphia, and Baltimore went to families for their own use. This had become possible because a new household convenience, the icebox, a precursor (先驱) 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 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 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. [br] According to the information in the second paragraph, an ideal icebox would______.
选项
A、completely prevent ice from melting
B、stop air from circulating
C、allow ice to melt slowly
D、use blankets to conserve ice
答案
C
解析
题目问:理想的冰箱应是什么样的。可以和此题目对应的一句是:“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.”值得注意的是,前半句说人们以前的常识是错的。因此A项是不对的。根据后半句“for it was the melting of the ice that performed the cooling”可知必须让冰慢慢溶化,才能起到冷却的作用,因此,正确答案是C项。
转载请注明原文地址:https://tihaiku.com/zcyy/3490903.html
相关试题推荐
Beforethe20thcenturythehorseprovideddaytodaytransportationintheUnit
Beforethe20thcenturythehorseprovideddaytodaytransportationintheUnit
Beforethe20thcenturythehorseprovideddaytodaytransportationintheUnit
Beforethe20thcenturythehorseprovideddaytodaytransportationintheUnit
Beforethe20thcenturythehorseprovideddaytodaytransportationintheUnit
Beforethe20thcenturythehorseprovideddaytodaytransportationintheUnit
Beforethe20thcenturythehorseprovideddaytodaytransportationintheUnit
Beforethe20thcenturythehorseprovideddaytodaytransportationintheUnit
Beforethe20thcenturythehorseprovideddaytodaytransportationintheUnit
Beforethe20thcenturythehorseprovideddaytodaytransportationintheUnit
随机试题
SummerforCol
Everybodysaysheisa______boy.A、promisedB、promisingC、topromiseD、promise
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Televisionnowplayssuchanimportantpartinsomanypeople’slivesthati
如热线式空气流量计的热线沾污,不会导致()。A.不易起动 B.加速不良 C
管道上的压力表,有时加装环形圈,其作用是( )。A.便于压力表的检修 B.增
A.早期很快出现完全性截瘫 B.感觉和运动障碍自下而上发展 C.感觉和运动障
下列符合《证券公司私募投资基金子公司管理规范》的是( )。A.甲证券公司原则上
从社会角度探讨药品和药学事业发展规律,以人为核心、以药品为物质对象开展全面的药学
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
最新回复
(
0
)