首页
登录
职称英语
By 1800 more than a thousand steam engines were in use in the British Isles,
By 1800 more than a thousand steam engines were in use in the British Isles,
游客
2025-02-05
19
管理
问题
By 1800 more than a thousand steam engines were in use in the British Isles, and Britain
retained
a virtual monopoly on steam engine production until the 1830s. Steam power did not merely spin cotton and roll iron; early in the new century, it also multiplied ten times over the amount of paper that a single worker could produce in a day. At the same time, operators of the first printing presses run by steam rather than by hand found it possible to produce a thousand pages in an hour rather than thirty. Steam also promised to eliminate a transportation problem not fully solved by either canal boats or turnpikes. Boats could carry heavy weights, but canals could not cross hilly terrain; turnpikes could cross the hills, but the roadbeds could not stand up under great weights. These problems needed still another solution, and the ingredients for it lay close at hand. In some industrial regions, heavily laden wagons, with flanged wheels, were being hauled by horses along metal rails; and the stationary steam engine was puffing in the factory and mine. Another generation passed before inventors succeeded in combining these ingredients, by putting the engine on wheels and the wheels on the rails, so as to provide a machine to take the place of the horse. Thus the railroad age sprang from what had already happened in the eighteenth century. [br] The word "
retained
" in the passage is closest in meaning to
选项
A、gained
B、established
C、profited from
D、maintained
答案
D
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3944544.html
相关试题推荐
By1800morethanathousandsteamengineswereinuseintheBritishIsles,
AgriculturalSocietyinEighteenth-CenturyBritishAmericaP1:Throughouttheco
AgriculturalSocietyinEighteenth-CenturyBritishAmericaP1:Throughouttheco
AgriculturalSocietyinEighteenth-CenturyBritishAmericaP1:Throughouttheco
AgriculturalSocietyinEighteenth-CenturyBritishAmericaP1:Throughouttheco
AgriculturalSocietyinEighteenth-CenturyBritishAmericaP1:Throughouttheco
AgriculturalSocietyinEighteenth-CenturyBritishAmericaP1:Throughouttheco
AgriculturalSocietyinEighteenth-CenturyBritishAmericaP1:Throughouttheco
AgriculturalSocietyinEighteenth-CenturyBritishAmericaP1:Throughouttheco
TheHurons,AwhomnumberedabouttwentyBthousandinthe1600s,Cwereaconfeder
随机试题
Whosaidthatthissweaterwillnot______whenwashed?A、shortenB、contractC、wi
ThestudentislookingfortheEconomichistoryoffice.[br][originaltext]M:H
TheotherdayIwaslisteningtoaChristianradioprogramonthewaytothe
【S1】[br]【S8】∧given→not由下文funds...mustberepaidtotheinvestors可知,百老汇是靠集资演出的
根据《建设工程安全生产管理条例》,施工单位应当在施工现场建立(),确定消防安全
男性,13岁,出生后即发现有心脏病,口唇青紫,平时体力活动能力较差。超声心动图提
与中小学相比,我国对幼儿园课程与教学管理相对较宽松.因此幼儿教师的劳动具有()A
下列关于放射型城市形态的表述,错误的是()。A.放射型城市形态主要受山地的影
交通标志主要包括()等。A.警告标志 B.禁令标志 C.指示标志、主标志下的
知识点:心肌炎 不是心肌炎的病因是 A.遗传 B.放射线照射 C.白喉
最新回复
(
0
)