首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
ITAIPU DAM: Vital statistics Location: Brazil and Paraguay Completion date:【D1】______ Purpose: Hydro-electric power Cost:【D2】___
ITAIPU DAM: Vital statistics Location: Brazil and Paraguay Completion date:【D1】______ Purpose: Hydro-electric power Cost:【D2】___
admin
2019-01-14
61
问题
ITAIPU DAM: Vital statistics
Location: Brazil and Paraguay
Completion date:【D1】______
Purpose: Hydro-electric power
Cost:【D2】______
Type: Gravity
Material:【D3】______
length: 7.8 kilometers
【D4】______: 196 meters
【D5】______: 1. 02 trillion cubic feet
There are two problems caused by the construction of the dam. One is that the water from the dam【D6】______which spread diseases among the people. The other is that the reservoir destroyed the rainforest, which consequently caused the death of【D7】______and other forest creatures.
Question 28 - 30 Label the diagram, and write one word for each blank.
【D3】
In this section, you will hear a short passage. For questions 21 -30, complete the notes using three words or fewer each blank. The passage will be read twice. Remember to write the answer on the answer sheet.
Hello and welcome to this, the fourth in our series of public lectures on Big Buildings. Today we’re going to take a look at the Itaipu Dam in South America. You may not know too much about Itaipu but it’ s been named one of the "Seven Wonders of the Modern World" by the American Society of Civil Engineers. And in this lecture, I hope to explain some of the reason why.
Ok, let’s begin with a few facts. First of all, where exactly is the Itaipu Dam? Well, it’ s on the Parana River, close to the border between Brazil and Paraguay. Construction began in 1975 and the dam was only finished in 1982. Two years later it started generating electricity and its now one of the largest hydro-electric power plants in the world. The total cost of the building was 20 billion dollars.
In design, it’s what is called a gravity dam, which means it relies on its immense weight for stability. The main section is made of concrete actually 15 times the amount of concrete that was used in creating the Channel Tunnel between England and France. To give you an idea of size, the dam is 7. 8 kilometers long, with a height of 196 meters. The reservoir behind the dam is huge—almost fifteen hundred square kilometers and the reservoir capacity is 1. 02 trillion cubic feet. The dam really is an amazing feat of engineering. Engineers actually had to change the course of the Parana, which is the seventh largest river in the world, and move 50 million tons of earth and rock in the process?
With any success story, I suppose there are bound to be a few problems. One is that the Itaipu Dam sometimes gets blocked with mud and silt, which is expensive to clear. But more seriously, this mud and silt carries bacteria, which can be transmitted in the water and cause illness in the people who use it. The other main problem was that when the land was originally flooded to create the reservoir, they destroyed a large area of rainforest, which was home to many birds and other forest creatures and sadly they died. Since then, however, seven new protected areas have been created for wildlife.
Ok, now let’s look at the construction of the dam. Can you see the point at the very bottom of the dam on the upstream face? That’s called the heel, just like part of your foot. And at the same point at the bottom of the downstream face of the dam is called the toe, also like the toe on your foot. On the top of the dam, that’s the part you can see above the water, the "crest" , and the base or ground on which the dam is built is the " foundation". I think that’s all you need to know for now.
选项
答案
concrete
解析
(从录音中提到的“The main section is made of concrete”,可知大坝的制成材料为混凝土。)
转载请注明原文地址:https://kaotiyun.com/show/0L8K777K
本试题收录于:
B类竞赛(英语专业本科专科)题库大学生英语竞赛(NECCS)分类
0
B类竞赛(英语专业本科专科)
大学生英语竞赛(NECCS)
相关试题推荐
OneofAmerica’smostimportantexportsishermodernmusic.Americanpopularmusicisplayingallovertheworld.Itisenjoyed
OneofAmerica’smostimportantexportsishermodernmusic.Americanpopularmusicisplayingallovertheworld.Itisenjoyed
76=24Correctthisequationsothatitmakessensebymovingthefourgivendigitsbutwithoutintroducinganyadditionalmath
Whatdowelearnaboutthemanfromtheconversation?
Ofalltheareasoflearningthemostimportantisthedevelopmentofattitudes.Emotionalreactionsaswellaslogicalthought
Whatreleasedanestimated8.7milliontonsoftheglobalwarminggas?
ThefirstnationalparkintheUnitedStates,______,including"OldFaithful",itsfamousforitsgeysersandforitsbearsan
—Howdoyoufeelaboutcountriesthatdon’ttrytoreduceglobalwarming?—______,thosecountriescaremoreaboutmoneythansa
Whichonebelowiscorrect?
随机试题
A.阻塞性通气功能障碍B.限制性通气功能障碍C.两者均有D.两者均无自发性气胸
利用实际观察法也可判定建筑物的成新率,或推测其有效经过年数、剩余经济寿命。()
经对某工程项目施工现场进行检查,发现存在下列问题,其中()没有违反《安全生产法》的规定。
青年家庭的理财核心策略应为( )。
在商业经济活动中,由于商业信息的来源、产生方式、加工手段的不同,使得商业信息的表现形式灵活,在用商业数据记录商业信息时要选择适当的记录方式。这说明商业数据具有()。
某事业单位根据经过批准的部门预算和用款计划,向同级财政部门申请支付本月的水费,财政部门经审核后,以财政直接支付的方式向自来水公司支付了该单位的水费,则该事业单位进行会计处理时,贷方应记入()科目。
“协调各方面的社区团体和个人,促进他们之间的沟通和合作,调动社区资源,改善社区的问题”,在这里社区工作者主要扮演的角色是()。
产品整体概念包含()。
【B1】【B4】
Thisspaciousroomis______furnishedwithjustafewarticlesinit.
最新回复
(
0
)