首页
登录
职称英语
In its early history, Chicago had floods frequently, especially in the spring
In its early history, Chicago had floods frequently, especially in the spring
游客
2024-01-15
44
管理
问题
In its early history, Chicago had floods frequently, especially in the spring, making the streets so muddy that people, horses, and carts got stuck. An old joke that was popular at the time went something like this: A man is stuck up to his waist in a muddy Chicago street. Asked if he needs help, he replies, "No,thanks. I’ ve got a good horse under me. "
The city planner decided to build an underground drainage(排水) system, but there simply wasn’ t enough difference between the height of the ground level and the water level. The only two options were to lower the Chicago River or raise the city.
An engineer named Ellis Chesbrough convinced the city that it had no choice but to build the pipes above ground and then cover them with dirt. This raised the level of the city’ s streets by as much as 12 feet.
This of course created a new problem: dirt practically buried the first floors of every building in Chicago. Building owners were faced with a choice- either change the first floors of their buildings into basements, and the second stories into main floors, or
hoist
the entire buildings to meet the new street level. Small wood-frame buildings could be lifted fairly easily. But what about large, heavy structures like the Tremont Hotel, which was a six-story brick building?
That’s where George Pullman came in. He had developed some house-moving skills successfully. To lift a big structure like the Tremont Hotel, Pullman would place thousands of jack-screws (螺旋千斤顶) beneath the building’ s foundation. One man was assigned to operate each section of roughly 10 jackscrews. At Pullman’ s signal each man turned his jackscrew the same amount at thesame time, thereby raising the building slowly and evenly. Astonishingly, the Tremont Hotel stay open during the entire operation, and many of its guests didn’ t even notice anything was happening.
Some people like to say that every problem has a solution. But in Chicago’ s early history, every engineering solution seemed to create a new problem. Now that Chicago’ s waste water was draining efficiently into the Chicago River, the city’ s next step was to clean the polluted river. [br] The city planners were convinced by Ellis Chesbrough to______.
选项
A、get rid of the street dirt
B、lower the Chicago River
C、fight against heavy floods
D、build the pipes above ground
答案
D
解析
细节题。当时的城市规划者们面临两个选择,要么升高城市的街道,要么降低河流的海拔。这位名为艾尔利斯-查斯波的工程师提出在城市地面架设管道,再用土来掩埋的办法来升高城市。故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3363391.html
相关试题推荐
Inwhatnowseemsliketheprehistorictimesofcomputerhistory,theearly
Inwhatnowseemsliketheprehistorictimesofcomputerhistory,theearly
Increasingly,overthepasttenyears,people—especiallyyoungpeople—haveb
Increasingly,overthepasttenyears,people—especiallyyoungpeople—haveb
Theybuiltthewailespeciallyhighsothatthelittleboycouldn’t________it.
Theoldmanwalkedslowly,stoppingfrequently______A、onrestB、atrestC、resti
Atthebeginningofthisterm,ourhistoryprofessor________alistofbooksfo
Inwhatnowseemsliketheprehistorictimesofcomputerhistory,theearly
Inwhatnowseemsliketheprehistorictimesofcomputerhistory,theearly
Inwhatnowseemsliketheprehistorictimesofcomputerhistory,theearly
随机试题
SpeakerA:Oh,Iamsorry.IjustrealizedthatIforgottobringthetaperecor
RussiaisthelargesteconomicpowerthatisnotamemberoftheWorldTrade
[originaltext]Twinsistersaresupposedtobeverymuchalike,aretheynot
Lodger:I’mterriblysorrythatIbrokeyourpreciousvase.I’llpayforit.Lan
[originaltext]Lastweek,theUnitedNationsheldaworldsummitonfoodsecu
关于大连接体下列说法错误的是()A.连接牙弓两侧各部件成一整体 B.直接
小儿肥胖症患儿一般不会有的护理问题是()。A.营养失调,高于机体的需要量 B
A.2000 B.500 C.1000 D.250
钻孔灌注桩单桩混凝土灌注时间宜控制在()内。A.1.2倍混凝土初凝时间 B.
(2012年真题)某矿区由于长期私挖滥采,为现生产煤矿遗留下重大水害隐患。近日该
最新回复
(
0
)