首页
登录
职称英语
[img]2016m3x/ct_eyyjsbz2014j_eyyjsbd_0305_20163[/img] ITAIPU DAM: Vi
[img]2016m3x/ct_eyyjsbz2014j_eyyjsbd_0305_20163[/img] ITAIPU DAM: Vi
游客
2024-08-10
45
管理
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.
[br] 【D9】
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
foundation
解析
(录音最后提到“the base or ground on which the dam is built is the‘foundation’”,因此该空所指平面为foundation。)
转载请注明原文地址:https://tihaiku.com/zcyy/3714297.html
相关试题推荐
Whatistheprobablerelationshipbetweenthemanandthewoman?[img]2016m3x/ct
Whatistheprobablerelationshipbetweenthemanandthewoman?[img]2016m3x/ct
Whatistheprobablerelationshipbetweenthemanandthewoman?[img]2016m3x/ct
[img]2016m12s/ct_eyyjsbz2015j_eyyjsbd_0200_201611[/img][br][originaltext]Int
[img]2016m12s/ct_eyyjsbz2015j_eyyjsbd_0200_201611[/img][br][originaltext]Int
[img]2016m12s/ct_eyyjsbz2015j_eyyjsbd_0200_201611[/img][br][originaltext]Int
[img]2016m12s/ct_eyyjsbz2015j_eyyjsbd_0200_201611[/img][br][originaltext]Int
[img]2016m3x/ct_eyyjsbz2014j_eyyjsbd_0305_20163[/img]ITAIPUDAM:Vi
[img]2016m3x/ct_eyyjsbz2014j_eyyjsbd_0305_20163[/img]ITAIPUDAM:Vi
[img]2016m3x/ct_eyyjsbz2014j_eyyjsbd_0305_20163[/img]ITAIPUDAM:Vi
随机试题
TheUSNavyiswarningshipstostayawayfromthecoastofSomaliaafteras
下列各项中,不属于土地统计资料主要查询方式的是( )。A.窗口办文查询 B.
患儿5个月,急性腹泻,频繁呕吐2天,检查头颅,可能发现的体征是A.囟门早闭 B
批发零售贸易业库存指报告期末各种登记注册类型的批发零售贸易企业已取得所有权的商品
下列企业中,属于生产性建筑企业的有()。A.勘察设计企业 B.机械
刑事责任包括警告、管制、拘役、有期徒刑、无期徒刑、死刑以及罚款、剥夺政治权利、没
(2018年真题)公司制期货交易所中,下列不属于董事长行使的职权的是()。A.
甲公司为居民企业,主要从事工艺品的生产和销售业务。2019年有关经营情况如下:
下列资产的清查中,可以采用实地盘点法的有()。A.库存半成品 B.银行存款
楼宇自动化系统中,消防监控系统的组成部分包括()。A.火灾自动报警系统 B.
最新回复
(
0
)