首页
登录
职称英语
The idea of a vacuum cleaner originates from the 19th century. The first vac
The idea of a vacuum cleaner originates from the 19th century. The first vac
游客
2023-11-09
20
管理
问题
The idea of a vacuum cleaner originates from the 19th century. The first vacuum cleaners had to be operated manually. Two persons were needed for this: one to operate the bellows and the other to move the mouthpiece over the floor. The dust was blown into the air.
On August 30th 1901 Hubert Cecil Booth, a British engineer, received a British patent for a vacuum cleaner. It took the form of a large, horse-drawn, petrol-driven unit which was parked outside the building to be cleaned with long hoses being fed through the windows.
Until then vacuum cleaners blew the dust away, but Booth came up with the idea of sucking away dust, instead of blowing. Furthermore Booth equipped his cleaner with a filter, which kept the dust in the machine. All modern vacuum cleaners are based on Booth’s principle.
As Hubert Booth, demonstrated his vacuuming device in a restaurant in 1901, two Americans introduced variations on the same theme. Corinne Dufour invented a device that sucked dust into a wet sponge. David E. Kenney’s huge machine was installed in the cellar and connected to a network of pipes leading to each room in the house. A corps of cleaners moved the machine from house to house.
In 1903 wealthy society ladies threw "vacuum cleaner parties". Guests sipped their tea and lifted their feet for Booth’s uniformed attendants to vacuum the carpet. After giving a vacuum demonstration at the Royal Mint, Booth, on leaving, was promptly stopped by the police. He had forgotten to empty the dust bag, which contained a large quantity of gold dust from the Mint.
In 1910 Professor Stanley Kent of University College, Bristol found 355,500,000 living organisms in just one gramme of dust extracted from Marlborough House, the home of HRH The Princess of Wales.
In 1907, James Murray Spangler, a janitor in a Canton, Ohio department store, deduced that the carpet sweeper he used was the source of his cough. He tinkered with an old fan motor and attached it to a soap box stapled to a broom handle. Using a pillow case as a dust collector on the contraption, Spangler invented a portable electric vacuum cleaner. He then improved his basic model the first to use both a cloth filter bag and cleaning attachments, and received a patent in 1908, and formed the Electric Suction Sweeper Company. One of the first buyers was a cousin, whose husband, William H. Hoover, later became the president of the Hoover Company, with Spangler as superintendent. Hoover’s improvements resembled a bagpipe attached to a cake box, but they worked. Sluggish sales were given a kick by Hoover’s 10 day, free home trial, and eventually there was a Hoover vacuum cleaner in nearly every home.
John Thurman started a horse drawn(door to door service)vacuum system in St. Louis, similar to Booth’s. His vacuuming services were priced at $4 per visit in 1903. He invented his gasoline powered vacuum cleaner, in 1899 and some historians consider it the first motorized vacuum cleaner. Thurman’s machine was patented on October 3, 1899(patent #634,042). [br] What was found by Stanley Kent is most similar to that was discovered by
选项
A、Booth.
B、Spangler.
C、Hoover.
D、Thurman.
答案
B
解析
第6段中的living organisms表明Kent发现灰尘里有细菌,而第7段第1句表明Spangler发现自己的咳嗽和地毯清洁器有关,而该段稍后提及Spangler在他发明的吸尘器上加上了清洁附件,由此可推断Spangler也发现灰尘里含有诱发疾病的细菌,由此可见,两者的发现是最相似的,因此本题应选B。
转载请注明原文地址:https://tihaiku.com/zcyy/3171860.html
相关试题推荐
Languagebelongstoeachmemberofthesociety,tothecleaner______totheprofe
Slaverywas______inAmericainthe19thcentury.A、abolishedB、cancelledC、abando
Languagebelongstoeachmemberofthesociety,tothecleaner______tothepro
Theideaofavacuumcleaneroriginatesfromthe19thcentury.Thefirstvac
Theideaofavacuumcleaneroriginatesfromthe19thcentury.Thefirstvac
Theideaofavacuumcleaneroriginatesfromthe19thcentury.Thefirstvac
Theideaofavacuumcleaneroriginatesfromthe19thcentury.Thefirstvac
Theideaofavacuumcleaneroriginatesfromthe19thcentury.Thefirstvac
Languagebelongstoeachmemberofthesociety,tothecleaner______tothepro
Slaverywas______inAmericainthe19thcentury.A、abolishedB、cancelledC、abando
随机试题
[originaltext]W:Thisfoodisterrible!Ican’tevenfinishmydinner.M:Ikno
Somepessimisticexpertsfeelthattheautomobileisboundtofallintodisu
Thebeginsofthemodernchemistrylaboratorygobacktotheworkroomsofmediev
[originaltext]TheWorldCarnivalissettostartitssecondfunfairinBeij
关于公路监控系统主要设备安装通用要求的说法,正确的是()。A.设备开箱检查
要求投资者有明确的投资预期,都以追求个人经济利益最大化为目标的是()。A.理性
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
工程建设项目施工招标,关于投标人的资格条件,下列说法正确的是()。A、分公司可以
依据《安全生产法》的规定,以下不属于安全生产监督管理职责部门的职权的是()。A、
采用主动管理方法的管理者认为,市场不总是有效的,加工和分析某些信息可以预测市场行
最新回复
(
0
)