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
2023-07-27
77
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://www.tihaiku.com/zcyy/2874643.html
相关试题推荐
Foreign-bornemployeesoftenobservethatAmericansspendaninordinateamou
Foreign-bornemployeesoftenobservethatAmericansspendaninordinateamou
Foreign-bornemployeesoftenobservethatAmericansspendaninordinateamou
Foreign-bornemployeesoftenobservethatAmericansspendaninordinateamou
[originaltext]AmericanengineersPaulFloresandJimGibbsonarestudyingM
[originaltext]AmericanengineersPaulFloresandJimGibbsonarestudyingM
Whatishappiness?WeAmericansbelievethattherightto【C1】______happine
Whatishappiness?WeAmericansbelievethattherightto【C1】______happine
Whatishappiness?WeAmericansbelievethattherightto【C1】______happine
Whatishappiness?WeAmericansbelievethattherightto【C1】______happine
随机试题
Whatcausesmentopursuetopmanagement?Psychologistsoncebelievedthatt
在中国,画家徐悲鸿的名字几乎家喻户晓,原因是他善于画马。徐悲鸿的马,独辟蹊径,无论奔马、立马、走马、饮马、群马,都赋予了充沛的生命力。20世纪
以下以T淋巴细胞浸润为主的疾病是A.白斑 B.扁平苔藓 C.天疱疮 D.复
男性,70岁,乙状结肠癌根治术后2天,剧烈咳嗽后切口全层裂开,最佳处理为(
(2020年真题)甲企业20×8年度财务报告批准报出日为20×9年2月28日。2
槐花散的功用是()A.清肠止血,疏风行气 B.益气健脾,养血止血
A.双缩脲法 B.溴甲酚绿法 C.连续检测法 D.醋酸纤维薄膜法或琼脂糖电
商业银行的信贷风险处置按照阶段划分,可以分为预控性处置与实质性处置。()
政府对国民收入分配进行调节是保持社会稳定的基本机制,二次分配时在初次分配的基础上
下列资料中,属于单价合同计量依据的有()。A.设计概算 B.质量合格证书
最新回复
(
0
)