首页
登录
职称英语
The word horsepower was first used two hundred years ago. James Watt had made
The word horsepower was first used two hundred years ago. James Watt had made
游客
2023-10-04
51
管理
问题
The word horsepower was first used two hundred years ago. James Watt had made the world’s first widely used (11) . He had no way of telling people exactly how powerful it was, for (12) there were no units for measuring power.
Watt decided to find out how much work one strong horse could do in (13) . He called that unit one horsepower. With this unit he could measure the work his steam engine could do.
He discovered that a horse lift a (14) weight 10 feet in one minute. Because his engine did (15) as much as the horse, Watt called it a ten-horsepower engine.
[br]
The word horsepower was first use two hundred years ago. James Watt had made the world’s first widely used steam engine. He had no way of telling people exactly how powerful it was, for at that time there were no units for measuring power.
Watt decided to find out how much work one strong horse could do in one minute. He called that unit one horsepower. With this unit he could measure the work his steam engine could do.
He discovered that a horse lift a 3300-pound weight 10 feet in one minute. Because his engine did ten times as much as the horse, Watt called it a ten-horsepower engine.
选项
答案
one minute
解析
该题既测试听清词组读音的能力,也测试科学常识的掌握情况。本文所讲的是计量单位“马力”的概念。计算“马力”的公式是一匹马在一分钟里所做的功。因此,结合读音和常识就能够判断出正确答案。
转载请注明原文地址:http://tihaiku.com/zcyy/3071166.html
相关试题推荐
Twohundredcomputers(sell)______sincethebeginningoftheyear.havebeenso
Chinahashundredsofislands,______isTaiwan.A、thelargestofwhichB、thelar
Themainideaofthispassageis______.[br]Twohundredyearsago,peoplemove
Intheearlyfifties,onlyeightornineoutofahundredyoungmenchangedthei
Overfivehundredyearsago,amandesigneda(11)machine.Healsoinvente
Overfivehundredyearsago,amandesigneda(11)machine.Healsoinvente
Thewordhorsepowerwasfirstusedtwohundredyearsago.JamesWatthadmad
Thewordhorsepowerwasfirstusedtwohundredyearsago.JamesWatthadmad
Aroundtenthousandpeoplewerelefthomelessandabouttwohundredandfifteen
Companiessometimesreceivehundredsofapplicationsforasinglejob,andi
随机试题
JacklosthisJoblastweek.Itwasdifficultforhimtofindanother【C1】___
[originaltext]W:Ihaveaveryimportantthingtoaskyou.DoyouspeakFrench?
Perfectcertaintybelongsonlytothegods;therestofushavetomakedowith
[originaltext]M:Ipassedbythestreetinfrontofourcollegeyesterday.Doy
敞口水箱的满水试验和密闭水箱(罐)的水压试验必须符合设计与本规范的规定。检验方法
下列说法与资料相符的是:A.沿海港口合计吞吐量2008年1月的同比增长额高于
对新参加电气工作人员、实习人员、临时参加劳动人员和外单位派来支援的人员有什么要求
我国税收收入占国民生产总值比重表 1985~1998年期间,我国国内生产总
有271位游客欲乘大、小两种客车旅游,已知大客车有37个座位,小客车有20个座位
下列导致现有设备贬值的情形中,属于设备有形磨损的有()。A.设备连续使用导致零
最新回复
(
0
)