The Hoover Dam

The Request for Proposal of Hoover DamName:NO.:1.Statement of workWith the main function of plans to build the dam in flood control and irrigation water supply, power generation and other comprehensive effect, the architecture is a concrete with 2.6 million m3 of concrete arch dam. The dam is 221.3 m high, crest length 379.2 m, the top 13.7 m wide, dam bottom width 201.2 m.The size of the hydropower station:Hydroelectric power is located behind the dam, with the right factory installed 8 business units, on the left bank workshop installation with nine business units, in addition to unit 2 sets for private use. Installed capacity of 2.08 million kw, generating 4 billion kw - h. Four intake tower built in front of the dam in the reservoir, four diameter is 9.14 m, the total delivery and 19 diameter is 3.99 m of pressure steel pipe are installed in on both sides of the tunnel.On both sides of the riverbed dam foundation and abutment mainly composed of lava, rock hard, in addition to very shallow table department (m) only weathering is flabby, joint fissure development, rock mass integrity, high range without a major discontinuity in dam foundation, dam upstream or downstream outside the foundation pit has a fault, 270 m apart.1000 ~ 1 100 f t elevation in bank slope is relatively slow, mainly lithology relatively poor, weak weathering resistance, breccia. But, whether lava or breccia, the uniaxial compressive strength of the wet average is more than 100 mpa. The deepest river bed cover 38 m. Seismic intensity 8 ° ~ 9 °.The hoover dam’s bedrock is hard andesite and breccia. Its riverbed is narrow and steep on both sides. Low water level to the depth of the bedrock is 33 ~ 40 m, low of 42.4 m, width of low water level of the water is 88-113 m.Table 1: data2. Requirements2.1The dam which will be constructed need to achieve the following purposes:(1)Can be irrigated farmland.For thousands of years’ each spring and early summer, the Colorado River due to the large snowmelt runoff import, resulting in rivers flooded in low-lying areas and public life and property suffered serious losses. But in the late summer and early autumn, rivers dried up again like a trickle, which cannot irrigate the farmland. In order to ensure not suffering flood and stable water supply all the year round, must control the troubled river. The to be built dam need to make sure that there are millions of acres of land in the United States, Mexico, about 500000 acres of land under irrigation, for local economic development and provide strong guarantee.(2) Can supply water.The dam can offer residential and commercial water supply in Las Vegas, Los Angeles, San Diego, phoenix and other south-west of the town's as well as the Arizona, Nevada and California Indian community residents and business.(3)To provide power.To provide the states with electricity, such as Nevada, Arizona and California, and annual output need to achieve 4 billion kw-h for 1.5 million residents.(4)Become a leisure entertainment places.Seek profits can be obtained from the aspects of tourism. In addition to the utilities such as electricity, water supply, make the dam realize its ornamental value as much as possible.2.2 The bidder's qualification shall meet the following conditions:1) Level of qualification of construction: Water conservancy and hydropower engineering construction general contracting level 2 and level 2 above;2) Construction experience: the enterprise has done similar project performance before January 2010, project manager or technical director has done similar project performance before 2008.3) Key personnel:Project manager: more than secondary and secondary water conservancy project;Technical director: water conservancy engineer and above.2.3 The unit cannot serve as a bidder belongs to one of the following situations:1) In this project or this contract project preparation stage has been as a legal person, or this contract’s employer has been hired for this contract’s design and consulting services;2) Have been employed as the supervisor of this contract.3. DeliverablesBidders shall be stipulated in the tender documents content and format of the compilation and submit the bid documents, bid documents should include qualification documents, business bid.3.1Qualification documentsEnterprise business license, qualification certificate, safety production license, investment project team personnel qualification certificate, 3 kinds of staff performance, enterprise similar projects, the project manager, or technical performance, head of the similar projects3.2 The business bid(1)Characteristic value of the bid documents(2)Bid proposal(3)Bid summary sheet.(4)Priced bill of quantities;(5)Temporary engineering quotation sheet;(6)Other cost quotation sheet;(7)Bidding the auxiliary materials unit price analysis table, material budget price summary table, unit price analysis table, the main material of concrete and the formulations of cement mortar with scale, etc.4. Items Supplied by UsWe will provide the contractors with detailed information about the dam’s current status, as well as statistical information regarding its surroundings.5. Approvals RequiredBefore the implementation of the project construction work, the contractor must obtain the approval of the final design.6. Type of ContractDue to the objective factors such as large-scale construction of the dam, long construction period, the contract is employed in adjustable price contract form.7. Due DateContractor must submit a request for proposal to us before March 1st, 20138. Time TableWe hope to elect a contractor before April 1st.The duration of the project is six years, from May 1st, 2013 to May 1st, 2019. All deliverables must be provided prior to May 1st, 2019 to the company.9. Payment TermsThis project adopts the progress payment(1) the completed quantity 50%, to 40% of the contract price;(2) complete the quantity of 90%, to 70% of the contract price;(3) after the completion acceptance, the paid to settle at 95%, 5% as quality retention, to be paid after the expiration of one year quality assurance.10. Proposal ContentsThe application must include the following contents:A. ApproachThe contractors need to clarify that they have a clear understanding of the expectations of the request for proposal which is on behalf of the contractor. Furthermore, describe the implementation of the project in detail, and for each task contractors should illustrate how to complete the tasks in detail.B. DeliverablesThe contractors should provide the description of each deliverable which should include the necessary data.C. ScheduleIn the form of a bar chart or network diagram, showing the timetable for the detailed tasks to be performed weekly, so as to complete the project within the time limit requirements.D. ExperienceDescribe the similar project that recently executed.E. StaffingLists the specific names of the officers who will be assigned to the work of the project and a detailed resume is required if he or she has experience in similar projects.F. CostsContractors must indicate the total investment of the project, which means the fixed assets investment and investment in current assets, including the cost of materials, labor costs, etc.11. Proposal Evaluation CriteriaWe will evaluate all contractor proposals according to the following criteriaA.Approach (30%)The approach and methodology the contractor proposes to conduct the project and analyze re results.B.Experience (30%)The experience of the contractor and the staff assigned to the project in performing similar projects.C.Price (10%)The fixed price of the contractor’s proposal is one method to evaluate.D.Schedule (10%)The detail and overall duration of the contractor’s proposed schedule to complete the project on or before the required project finish date.。

绝密★启用前2021年高考英语考前信息必刷卷第二模拟注意事项：1．答卷前，考生务必将自己的姓名、考生号等填写在答题卡和试卷指定位置上。

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第一部分阅读（共两节, 满分50分）第一节（共15小题：每小题2.5分, 满分37.5分）阅读下列短文, 从每题所给的A、B、C、D四个选项中选出最佳选项。

ATake a high-quality helicopter tourfrom Las Vegas to the Grand Canyon West Rim(边缘）！Highlights★A great Grand Canyon West Rim helicopter tour with an optional Skywalk★Eagle Point★Guano Point★Hualapai RanchWhat You Can ExpectYour journey from Las Vegas to the Grand Canyon begins with a scenic helicopter flight over Lake Mead, Hoover Dam, Fortification Hill and Temple Rock. Upon landing, you will have approximately 3. 5 hours to explore. Enjoy a meal at the viewpoint of your choice.You'll visit Eagle Point, home to the Skywalk, a glass-bottom walking surface that suspended（悬浮）more than 4, 000 feet above the Grand Canyon.At Guano Point, you can visit Highpoint Hike, where you'll see breathtaking views of the Grand Canyon and Colorado River. Also visit Hualapai Ranch where you can go horseback riding. Also at the ranch there is cowboy entertainment, wagon rides, and more.Finally, if you select the helicopter upgrade option, you'll fly down to a private bluff(悬崖）at the bottom of theGrand Canyon. Enjoy this breathtaking setting and make sure to bring your camera for unique photo opportunities. The activity lasts approximately 40 minutes and features 20 minutes at the bottom of the canyon.Additional Information★The listed price does not include a US$15 fuel surcharge(附加费）per person, payable at the time of check-in. According to FAA regulations, all passengers 18 years and older will be required to show photo ID such as a driver's license or passport at the time of check-in.★All loose objects including cameras are NOT allowed on the Skywalk. Personal belongings will need to be stored in a locker for free. Photos can be purchased at the gift shop.★Due to comfort and weight/balance of the aircraft, passengers weighing over 136kg will be required to purchase an additional seat. This is payable directly to the tour operator on the day of the tour.Departure PointsFrom selected Las Vegas hotelsDeparture Time★8 am or 9 am★Departure time is subject to change due to weather conditions and weight restrictions.Duration7 hoursReturn DetailsReturn to original departure points1. Where is a visitor most likely to see cowboys on his journey?A. At Hoover Dam.B. At Hualapai Ranch.C. At Eagle Point.D. At Guano Point.2. If possible, how long can a visitor stay at the bottom of the Grand Canyon?A. For about 20 minutes.B. For about 40 minutes.C. For about 1 hour.D. For about 3. 5 hours.3. When a passenger takes the helicopter tour, which of the following he need to do?A. must arrive at a Las Vegas strip hotel before 9B. can take pictures on the SkywalkC. must be 18 years and olderD. can have a packed lunchBA few weeks ago, I bought a locally-grown salad from a vending machine(自动售货机). But then I immediatelyrealized that it was packaged in a plastic jar. ''I guess I live with this jar now and forever. '' I thought sadly as I stared down at my new child.The salad jar was only the latest in a long line of examples of how I am addicted to the responsibility of reusing everything, trying to never throw anything away. Water bottles have been given second lives, and berry containers are transformed into Tupperware. I recently even looked at a plastic straw in my fruit juice: Could I reuse it too…?Yet trying to squeeze my salad jar under my kitchen counter this weekend, I finally had to admit: Being an environmentalist has turned me into a hoarder(囤积者). While keeping a certain number of jars and vegetable bags will allow me not to buy new containers, at a certain point those 30 berry containers begin to get a bit unnecessary. Who am I kidding? Then one day I came across a blog post that asks accusingly. ''Are you turning your own home into a landfill(垃圾填埋场)? ''In my defense, there is absolutely no excuse not to be a conscious consumer. The solution is painfully obvious, but hard to admit: Delaying waste is not, in fact, rejecting waste. In an over-packaged, over-consuming culture, this can feel like a burden. While I refuse to throw away packaging, the fact remains: I already have it. The damage is done. I've been ignoring one of the most essential and difficult parts—reduce, reuse, recycle. Even if I go out of my way to reuse the waste I do have, I need to reduce what I am bringing home in the first place.While I might not be ready to go full zero-waste, it's a goal that is admirable to work toward. Until then, my salad jar child is going to make a great overnight oats jar.4. What does the author try to indicate by the last sentence in paragraph 2 ?A. How important reusing is.B. How she makes use of the plastic straw.C. How enthusiastic she is about reusing.D. Why she is responsible for reusing plastic straws.5. Why does the author say she has turned into a hoarder?A. She enjoys collecting a variety of small jars.B. She has saved far more containers than she needs.C. She likes the idea of saving fine packages in daily life.D. She stores more berry containers than other containers.6. What does the underlined word ''this'' in paragraph 4 refer to?A. Over-packaging.B. Delaying waste.C. Over-consuming.D. Rejecting waste.7. The author realizes at last that she should___________.A. buy fewer over-packaged goodsB. throw away unnecessary packagingC. reuse materials as much as possibleD. appreciate the value of recycling materialsCArtificial Intelligence (AI) advice is as influential as human’s, but positive crowd views still overpower.In a study, researchers found that machines that make recommendations—or AI experts—were as influential as human experts when the AI experts recommended which photo users should add to their online business profiles. However, both AI and human experts failed to budge them if their feedback was negative and went against popular views among other users, said S. Shyam Sundar, a professor of Media Effects.Because people are increasingly using social media to look for feedback, studies suggest that expert opinions and the bandwagon（从众效应）effect may be important factors in influencing decisions, according to Jinping Wang, a doctoral candidate in mass communication and first author of the study. “Nowadays, we often turn to online platforms for opinions from other people—like our peers and experts—before making a decision,” sai d Wang. AI experts are often less expensive than human experts and they can also work 24 hours a day, which, Wang suggests, might make them appealing to online business.The researchers also found that the AI’s group status—in this case, national origin was pointed out—did not seem to affect a person’s acceptance of its recommendation. Among human experts, however, an expert from a similar national origin who offered a negative opinion of a photograph tended to be more influential than a human expert from an unknown country who offered a similar negative rating of a photograph.While findings that suggest group status may not affect whether a person values the view of AI experts sound like good news, Sundar suggests that the same cultural prejudice might still be at work in AI experts for they could be hidden in the programming and training data.“It can be both good—and bad—because it all depends on what you feed the AI,” said Sundar. “While it is good to believe in AI’s ability to transcend（超越）cultural prejudice, we have to keep in mind that if you train the AI on pictures from one culture, they could give misleading recommendations on pictures meant for use in other cultural contexts.”8. What do the underlined words “budge them” in Paragraph 2 mean?A. Cha nge users’ ideas.B. Satisfy users’ needs.C. Raise users’ spirits.D. Fire users’ imagination.9. Why do users often turn to AI experts?A. Because AI experts are more knowledgeable.B. Because AI experts are less influenced by feelings.C. Because AI experts are always available and cost less.D. Because AI experts are so new as to be more attractive.10. Which expert’s negative assessments is a person more likely to believe?A. An expert who has great achievements in arts.B. An expert from countries with similar cultures.C. An expert with better personality and attitude.D. A foreign expert who is very popular worldwide.11. What did Sundar mean by the last paragraph?A. People should have a mind of their own.B. People should be able to tell good from bad.C. People should know AI’s hidden cultural prejudice.D. People should be trained how to use AI properl y.DFor years, South Korea has struggled with a growing demographic（人口的）crisis. The country’s fertility rate has repeatedly hit record lows, and ranks near the bottom of the lowest fertility rates in the world. Meanwhile, South Korea’s population continues to age, sending the country into a demographic decline.There were only 275,815 births, a record low – compared to 307,764 deaths, a 3.1% increase in fatalities from the previous year. This is the first time South Korea has hit the “population death cross,”when the number of deaths surpasses births, the ministry said in a news release – and the first time the total population has shrunk.The population continues to age rapidly, the census showed: 32.7% of people are in their 40s and 50s, and nearly a quarter are over the age of 60.“The constant decline in birth rate shows that low birth rate remains as a big issue in Korea,” the release said. “There needs to be a fundamental change in the governmental policies such as welfare, education, and national defense, accordingly.”There is a major reason for population decline – one being a demanding work culture that makes it difficult to balance careers with family life.There is also a trend to delay or avoid marriage. Among those who were not dating, 51% of men and 64% of women said they chose not to date so they can enjoy their hobbies or focus on education. Many say they just don’t have the time, money, or emotional capacity to go on dates.More recently in December, the government released its 4th Basic Plan for Low Fertility and Aging Society, which lays out their plans for population policy over the next five years, including offering cash bonuses for childbirth, subsidies for childcare, and expanded benefits for multi-child families, except that the government lowered maximum working hours from 68 hours a week to 52 hours last year in 201812. What does the South Korea government deal with the growing demographic crisis?A. The South Korea government is taking no measures to solve the growing demographic crisisB. The South Korea government doesn’t recognize the seriousness of the growing demographic crisisC. The South Korea government has lowered maximum working hoursD. The South Korea government is attempting to take action to solve the growing demographic crisis13. What’s the biggest problem about the population decline of South Korea?A. young people’s avoiding marriageB. high death rateC. low birth rateD. hard working surroundings14. Which isn’t the South Korea government ready to do in the next five years?A. offering cash bonuses for childbirthB. subsidies for childcareC. expand benefits for multi-child families,D. lower maximum working hours from 68 hours a week to 52 hours15. This article/text/passage mainly tells that _____________A. The reasons for the population drop of South KoreaB. South Korea's population continues to ageC. South Korea's low births rateD. South Korea's demanding work culture第二节（共5小题：每小题2. 5分, 满分12. 5分）阅读下面短文, 从短文后的选项中选出可以填入空白处的最佳选项。

The Three Gorges Dam is a massive hydroelectric gravity dam that spans the Yangtze River by the town of Sandouping,in Yiling District,Yichang,Hubei province, China.It is the worlds largest power station in terms of installed capacity22,500MW. The dam was completed in2012.The Three Gorges Dam is a remarkable engineering feat,and its construction has had a profound impact on the regions ecology,economy,and culture.Here is an English essay about the Three Gorges Dam with a translation into Chinese.The Three Gorges Dam:A Modern WonderThe Three Gorges Dam is a testament to human ingenuity and the power of modern engineering.Situated along the Yangtze River,the dam stands as a colossal structure that not only harnesses the rivers energy but also reshapes the landscape and the lives of the people living in its vicinity.Construction and PurposeThe construction of the dam began in1994and was completed in2006,with the final 33rd turbine unit being installed in2012.The primary purpose of the dam is to generate hydroelectric power,which is a clean and renewable source of energy.It is estimated that the dam produces enough electricity to supply power to millions of homes and businesses across China.Ecological ImpactWhile the dam has brought about significant economic benefits,it has also raised concerns about its ecological impact.The creation of the Three Gorges Reservoir has led to the submersion of numerous towns and archaeological sites,displacing thousands of people and affecting the habitats of various species.Efforts have been made to mitigate these effects,such as the establishment of new habitats and the implementation of conservation programs.Cultural SignificanceThe Three Gorges region is rich in cultural heritage,with a history that spans thousands of years.The dams construction has had a profound effect on this heritage,with some areas being preserved and others being lost forever.The dam serves as a reminder of thebalance that must be struck between progress and preservation.ConclusionThe Three Gorges Dam is a symbol of Chinas rapid development and its commitment to harnessing natural resources for the benefit of its people.It is a complex project that has brought both opportunities and challenges.As we look to the future,it is essential to continue to evaluate the dams impact and strive for sustainable solutions that honor the past while embracing the future.三峡大坝：现代奇迹三峡大坝是人类智慧和现代工程力量的见证。

《变形⾦刚》游戏全部通关流程攻略基础讲解：正式开始游戏前有⼀段开场动画，推荐看完，制作得不错。

同时也算是了解⼀下电影版变形⾦刚的剧情，毕竟电影版和曾经的G1系列差别还是很⼤的。

第⼀次游戏的时候会要求玩家选择所属派别：Autobot(博派)和Decepticon(狂派)游戏界⾯解释如下图：(暂时只提供攻略先⾏的Autobot界⾯)~Autobot~⾓⾊的操作性根据体型和汽车形态是有差别的，不是之前所谓的难以驾控，在熟悉⾓⾊以后操作就变得很⾃然简单了。

机器⼈形态是可以⼀直按住W键攀爬建筑物的，后期的追逐战⾥⾯要灵活应运攀爬技能和跳跃技能。

⼤黄蜂：汽车形态下，操作最为不易的⾓⾊;机器⼈状态很灵活。

铁⽪：不管是汽车形态还是机器⼈形态操作都很容易上⼿。

擎天柱：汽车形态下，变向较慢。

机器⼈状态下，速度⽐较慢，但是很转向很稳。

第⼀章：The Suburbs(四⼩关)这关都是由⼤黄蜂作为主⾓的关卡，主要讲述和地球⼈SAM相遇的过程。

1、操作练习——熟悉机器⼈形态的武器使⽤和近⾝格⽃，这⾥推荐近⾝格⽃(默认为E键)，按照地图的标⽰前进即可完成。

2、操作练习——熟悉汽车形态下⾯的操控(⿏标中键上拨即可变形)。

开始需要追逐敌⽅汽车并攻击，使之成为机器⼈形态，然后近⾝狂按“E”即可轻松解决掉;后期三个敌⼈的时候由于多了时间限制就显得⽐较⿇烦点，最简单的⽅法是预判敌⼈前进路线，变成机器⼈状态攻击他们使之全成为机器⼈状态以后再消灭掉。

3、对付狂派路障——和他战切记开始是不能近⾝的，需要站在远处⽤Q键拾起重物瞄准以后击向他，趁他硬直的时候再近⾝攻击，反复⼏回合就可击败他(途中要换地点PK，需要注意时间限制)。

有⼿型标⽰时候可以拾取物品4、破坏雷达和能源设施——难以想象这关是博派所为，不过为了不让敌⼈得到资源，只能这样了。

根据地图提⽰摧毁雷达和电⼒设施就好了，还是要注意地点切换的时候有时间限制。

另外在第⼆个地点有敌⼈前来⼲预破坏，需要注意防范。