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水利计算（analysis of irrigation water resources）
题目
水利计算（analysis of irrigation water resources）
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更多“水利计算（analysis of irrigation water resources）”相关问题
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第1题：
共用题干
第二篇
Human and the Earth
In terms of the evolution of life on Earth,human beings have just arrived.Despite their shori time on Earth,however,people have brought about enormous changes to the surface of the planet一changes far out of proportion to the interval of time they have occupied it.
People have more control over their surroundings than any other species on Earth.With the combination of intelligence and manual skill(allowing us to make and use tools),people have found ways to use plant and animal resources,mineral ores,fuels,and many other materials and resources from the Earth.
As the number of people on Earth increases,it becomes increasingly difficult for the population to survive on the resources of the land.The amount of land is limited.Although agricultural production can be increased by use of machinery such as tractors and the addition of fertilizer,the land ultimately can produce only so much food and no more.
As the human population grows,people consume more.Clearly,some locations on Earth already have too many people;in many of these areas,future increases will surely bring about more poverty and suffering. Yet people in rich nations use proportionally far more of the available resources than people in poorer nations.As they consume these resources without restraint,they also waste large amounts of them.
People are only a very small fraction of all the living things on the planet.Yet their numbers create a drain on resources that can't be renewed.For example,the amount of water on Earth is limited,this water is cleaned through natural processes.However,the natural processes for filtering water can clean only a certain amount of water by removing the pollution.Likewise,a limited amount of petroleum can be found under the Earth's surface.Petroleum is a valuable resource.Should people use it up to manufacture petrol for automobiles?As people work to control the planet and make life comfortable,are they using up resources that are needed for their survival?in terms of the evolution of life on Earth,the history of human beings is_______.
A:very short
B:very long
C:as long as that of other animals
D:as long as that of the Earth答案：A解析：文章第一段第一句话提到“就地球上生命的进化而言，人类是姗姗来迟者”，因此比较而言，人类的历史并不长。选项A是正确的。
从文章第二段第二句话“With the combination of intelligence and manual skill...”我们知道选项A和B都是正确的，因此选择D项。
文章第三段提到，土地的总量是有限的。虽然使用拖拉机等机械和施用化肥可以提高农业产量，但是土地最终所能产出的粮食只有那么多，不会再增加。因此只有选项C是正确的。
文章第四段第三句说富裕国家的人们所使用的能源在比例上远远大于贫穷国家的人们。选项C中提到的“发达国家的人们”最符合题意。
根据文章最后一段关于资源的描述我们可以发现选项A、B、C都是正确的，只有选项D的表述错误，因此选择D项。 -
第2题：
共用题干
第二篇
Human and the Earth
In terms of the evolution of life on Earth,human beings have just arrived.Despite their shori time on Earth,however,people have brought about enormous changes to the surface of the planet一changes far out of proportion to the interval of time they have occupied it.
People have more control over their surroundings than any other species on Earth.With the combination of intelligence and manual skill(allowing us to make and use tools),people have found ways to use plant and animal resources,mineral ores,fuels,and many other materials and resources from the Earth.
As the number of people on Earth increases,it becomes increasingly difficult for the population to survive on the resources of the land.The amount of land is limited.Although agricultural production can be increased by use of machinery such as tractors and the addition of fertilizer,the land ultimately can produce only so much food and no more.
As the human population grows,people consume more.Clearly,some locations on Earth already have too many people;in many of these areas,future increases will surely bring about more poverty and suffering. Yet people in rich nations use proportionally far more of the available resources than people in poorer nations.As they consume these resources without restraint,they also waste large amounts of them.
People are only a very small fraction of all the living things on the planet.Yet their numbers create a drain on resources that can't be renewed.For example,the amount of water on Earth is limited,this water is cleaned through natural processes.However,the natural processes for filtering water can clean only a certain amount of water by removing the pollution.Likewise,a limited amount of petroleum can be found under the Earth's surface.Petroleum is a valuable resource.Should people use it up to manufacture petrol for automobiles?As people work to control the planet and make life comfortable,are they using up resources that are needed for their survival?What makes people feel hard to live on Earth?
A:Fertilizer.
B:Lse of machinery.
C:Limited land.
D:Limited mineral resources.答案：C解析：文章第一段第一句话提到“就地球上生命的进化而言，人类是姗姗来迟者”，因此比较而言，人类的历史并不长。选项A是正确的。
从文章第二段第二句话“With the combination of intelligence and manual skill...”我们知道选项A和B都是正确的，因此选择D项。
文章第三段提到，土地的总量是有限的。虽然使用拖拉机等机械和施用化肥可以提高农业产量，但是土地最终所能产出的粮食只有那么多，不会再增加。因此只有选项C是正确的。
文章第四段第三句说富裕国家的人们所使用的能源在比例上远远大于贫穷国家的人们。选项C中提到的“发达国家的人们”最符合题意。
根据文章最后一段关于资源的描述我们可以发现选项A、B、C都是正确的，只有选项D的表述错误，因此选择D项。 -
第3题：
节水灌溉（water-saving irrigation）
正确答案: 根据作物需水规律和当地供水条件，高效利用降水和灌溉水，以取得农业最佳经济效益、社会效益和生态环境效益的综合措施。 -
第4题：
灌溉（irrigation）
正确答案: 按照作物生长需要，利用水利工程设施有计划地将水送到田间，以补充农田水分的人工措施。 -
第5题：
管道水利计算可以完成以下哪些计算内容的计算（）
- A、计算流速，水利坡降
- B、计算管径，水利坡降
- C、计算流量，水利坡降
- D、计算管径，流速
正确答案:A,B,C,D -
第6题：
英译中（Translate）：sprinkling irrigation（）
正确答案:喷灌 -
第7题：
填空题英译中（Translate）：sprinkling irrigation（）正确答案： 喷灌解析： 暂无解析 -
第8题：
问答题Many parts of the world are losing important natural resources, such as forests, animals, or clean water. Choose one resource that is disappearing and explain why it needs to be saved. Write a composition of about 400 words on the topic.正确答案：
SAVING TREES ON OUR PLANET Many natural resources are being wasted on our planet every day. One of the most important resources we are abusing is our trees. Each year, hundreds of thousands of acres of trees disappear in countries all around the world. In some countries, trees are used for fuel. In other countries, trees are destroyed to build houses and shopping centers. Saving trees has become a major cultural and economical issue in many parts of the world.
Trees are essential to our survival. They are a major part of the process of photosynthesis. Photosynthesis is the process in which green plants use carbon dioxide to produce oxygen, and oxygen is something all of us need. The fewer trees there are, the more this affects our ability to breathe.
In rural areas, farmers have always known how important trees are to soil conservation. This is why you'll usually see trees lining a field. Tree roots help keep the soil in place, and are also a factor in water distribution deep beneath the ground. They help to prevent drought and floods. Unfortunately,in many parts of our country,people haven't realized the importance of trees. They cut them down at will. They are usually too lazy or too careless to plant and look after new trees. As a result, the forests continue to disappear. Where there are no trees the rain falls on the surface, causing floods, and carries away with the rich topsoil, in which crops grow so well. When all the topsoil is gone, nothing remains but worthless deserted.
Trees are also important in the development of many medicines. The mainstream medical establishments did not recognize this for many years. However, those who use natural medicines have always known how important trees are. Many drugs come from the leaves of certain trees, along with other herds and plants.
Finally, we should save trees from disappearing because they provide so much pleasure. I think that I shall never see a poem as lovely as a tree, wrote a poet. That is the truth. A tall, stately tree is beautiful to look at, and pleasing to the soul. It is also a great place to find shade on a hot summer's day.
For practical and emotional reasons, we need to preserve our planet's trees.解析：
本题要求选择一种正在消失的自然资源并解释为什么要保护。范文作者选择了树木，在第一段描述了森林消失的状况。第二、三、四、五段分四点说明了树木对人类的重要性。最后一段用一句话总结了中心思想。 -
第9题：
问答题Practice 5 Water is essential for life. Yet many millions of people around the world face water shortages. Many millions of children die every year from water-borne diseases. And drought regularly afflicts some of the world’s poorest countries. The world needs to respond much better. We need to increase water efficiency, especially in agriculture. We need to free women and girls from the daily chore of hauling water. We must involve leaders of countries in decision-making on water management. We need to make sanitation a priority. This is where progress is lagging most. And we must show that water resources need not be a source of conflict. Instead, they can be a catalyst for cooperation. Significant gains have been made. But a major effort is still required. Our goal is to meet the internationally agreed targets for water and sanitation by 2015, and to build the foundation for further progress in the years beyond. This is an urgent matter of human development, and human dignity. Together, we can provide safe, clean water to the entire world’s people. The world’s water resources are our lifeline for survival, and [or sustainable development in the 21st century. Together, we must manage them better.正确答案： 【参考译文】
水对生命是至关重要的,然而世界各地数以百万计的人们却面临着水源短缺的问题。每年有数百万儿童由于水传播的疾病而死亡,世界上某些最贫穷的国家经常遭受干旱的折磨。
世界需要更好地应对这一挑战。我们需要提高用水效率,特别是在农业方面;我们需要把女性从每日提水的家务中解放出来;我们必须使国家领导人参与水源管理的决策;我们需要优先考虑公共卫生,而这方面的进展尤为缓慢;我们必须指出水资源不应成为冲突之源,而应成为合作的催化剂。
我们已取得了显著进展,但仍需付出巨大努力。我们的目标是:要达到国际社会协商规定的2015年前要达到的水和卫生方面的目标,并为以后的进展奠定基础。
这是一个关乎人类发展和尊严的紧迫问题;如果齐心协力,我们可以为全世界人民提供安全、清洁的水。水资源是我们赖以生存的生命线,也是21世纪可持续发展的生命线;我们必须共同努力,更好地管理水资源。解析： 暂无解析 -
第10题：
单选题Distilled water from an evaporator may be discharged into a potable water tank （）.Athrough a detachable hose connection
Bafter passing through an activated charcoal filter
Cafter chemical analysis shows it is fit for consumption
Dthrough a solenoid operated three-way valve
正确答案： A解析： 暂无解析 -
第11题：
多选题管道水利计算可以完成以下哪些计算内容的计算（）A计算流速，水利坡降
B计算管径，水利坡降
C计算流量，水利坡降
D计算管径，流速
正确答案： A,B,C,D解析： 暂无解析 -
第12题：
单选题Which of the following does not contribute to the formation of Mesopotamian, Egyptian, and Indus Valley civilizations?ASparse population.
BFertile soil and abundant water resources.
CThe successful domestication.
DBroad cultural interaction.
正确答案： A解析：
细节题。文章第二段第一句首先提出假设，想象在有文字记载的历史出现之前，人类在三个人烟稀少但水土肥沃的地方定居，种植植物、驯养动物。河流为驯养提供条件，农牧驯养的成功为这些地区吸引了越来越多的人和动物。第三段第一句又提到，人口向河谷和平原的迁移为这些文明的初步形成奠定了基础，由此可推断选项B（肥沃的土壤）和选项C（成功的驯养）对三大文明的形成起到了促进作用。选项D（广泛的文化交流）是人口迁移的必然结果，故也促进了三大文明的形成。而选项A（稀少的人口）只是对当时人口状况的描述，不是促成因素，故答案为A项。 -
第13题：
共用题干
第二篇
Human and the Earth
In terms of the evolution of life on Earth,human beings have just arrived.Despite their shori time on Earth,however,people have brought about enormous changes to the surface of the planet一changes far out of proportion to the interval of time they have occupied it.
People have more control over their surroundings than any other species on Earth.With the combination of intelligence and manual skill(allowing us to make and use tools),people have found ways to use plant and animal resources,mineral ores,fuels,and many other materials and resources from the Earth.
As the number of people on Earth increases,it becomes increasingly difficult for the population to survive on the resources of the land.The amount of land is limited.Although agricultural production can be increased by use of machinery such as tractors and the addition of fertilizer,the land ultimately can produce only so much food and no more.
As the human population grows,people consume more.Clearly,some locations on Earth already have too many people;in many of these areas,future increases will surely bring about more poverty and suffering. Yet people in rich nations use proportionally far more of the available resources than people in poorer nations.As they consume these resources without restraint,they also waste large amounts of them.
People are only a very small fraction of all the living things on the planet.Yet their numbers create a drain on resources that can't be renewed.For example,the amount of water on Earth is limited,this water is cleaned through natural processes.However,the natural processes for filtering water can clean only a certain amount of water by removing the pollution.Likewise,a limited amount of petroleum can be found under the Earth's surface.Petroleum is a valuable resource.Should people use it up to manufacture petrol for automobiles?As people work to control the planet and make life comfortable,are they using up resources that are needed for their survival?Which of the following statements about resources on Earth is not correct?
A:They can not be renewed.
B:Water is a kind of resource which can not be renewed.
C:Some of the resources are valuable.
D:Many resources can be recycled so we don't need to worry about them.答案：D解析：文章第一段第一句话提到“就地球上生命的进化而言，人类是姗姗来迟者”，因此比较而言，人类的历史并不长。选项A是正确的。
从文章第二段第二句话“With the combination of intelligence and manual skill...”我们知道选项A和B都是正确的，因此选择D项。
文章第三段提到，土地的总量是有限的。虽然使用拖拉机等机械和施用化肥可以提高农业产量，但是土地最终所能产出的粮食只有那么多，不会再增加。因此只有选项C是正确的。
文章第四段第三句说富裕国家的人们所使用的能源在比例上远远大于贫穷国家的人们。选项C中提到的“发达国家的人们”最符合题意。
根据文章最后一段关于资源的描述我们可以发现选项A、B、C都是正确的，只有选项D的表述错误，因此选择D项。 -
第14题：
For decades，farmers and environmentalists in California have been entangled in a______over laws that limit the amount of water diverted from rivers and streams for irrigation。A.dispute
B.register
C.conflict
D.negotiation答案：A解析：本题考查词义辨析。题目意为“几十年来，加利福尼亚州的农民和环境保护主义者一直纠结于限制从河流和溪流中分流用于灌溉的水量的法律纠纷。”A选项“辩论，纠纷”，B选项“登记，注册”，C选项“冲突，矛盾”，D选项“谈判，转让”。根据句意，应该是双方就该法律有纠纷，a dispute over laws，法律纠纷，选项A正确。
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第15题：
灌溉水源（water sources for irrigation）
正确答案: 可用于灌溉的地表水、地下水和达到利用标准的非常规水的总称。 -
第16题：
农田水利（irrigation and drainage）
正确答案: 防治旱、涝、渍和盐碱等灾害，对农田实施灌溉、排水等人工措施的总称。 -
第17题：
数值分析（Numerical Analysis）又称（）。
- A、数值计算
- B、科学计算
- C、数学分析
- D、数值科学
正确答案:A -
第18题：
When executing a SQL workload, you choose to generate execution plans only, without collecting execution statistics. Which two statements describe the implications of this?（）
- A、It produces less accurate results of the comparison analysis.
- B、It automatically calls the SQL Tuning Advisor for recommendations.
- C、It shortens the time of execution and reduces the impact on system resources.
- D、Only the changes in the execution plan, and not performance regression, are detected.
正确答案:A,C -
第19题：
单选题Large quantities of water ______ for irrigation.Ais needed
Bhas needed
Care needed
Dneed
正确答案： B解析：
quantities是复数形式，不管后面接的名词是单数还是复数，谓语动词都用复数。本句里“大量的水被需要”，要用被动语态，故为C。 -
第20题：
单选题In order to raise the efficiency of the water supply, measures should be taken to _____.Acentralize the management of water resources
Bincrease the sense of responsibility of agencies at all levels
Cguarantee full protection of the environment
Dencourage local and regional control of water resources
正确答案： B解析：
推断题。本题询问提高供水效率的方式。文章最后说，国家建立中心权力机构来协调关于水的方针政策，与A项的“水资源的集中管理”是一致的，故A为答案。 -
第21题：
单选题The author says that in some hot and dry areas it is advisable to _____.Abuild big lakes to store water
Bconstruct big pumping stations
Cchannel water from nearby rivers to cropland
Dbuild small and cheap irrigation systems
正确答案： C解析：
细节题。第四段第二句提到，在热带干旱地区可“通过一些小规模的工程，例如在凹地收集雨水，旱时用泵抽雨水来灌溉附近的农田。”这是最便宜的供水方式。 -
第22题：
单选题数值分析（Numerical Analysis）又称（）。A数值计算
B科学计算
C数学分析
D数值科学
正确答案： A解析： 暂无解析 -
第23题：
单选题What is the real cause of the potential water crisis?AThe world population is increasing faster and faster.
BHalf of the world’s water resources have been seriously polluted.
CHumanity has not placed sufficient value on water resources.
DOnly half of the world’s water can be used.
正确答案： B解析：
细节题。文章第一段作者说如果找们现在能比过去更加重视水的话，世界未必就会陷入缺水的困境（即使人口增一倍）。下文阐述避免将来世界缺水的对策和方法，从上文叙述说明水的潜在危机不是人口增加也不是污染严重造成的。更不是用得多，才用了不到一半。根本原因是过去我们没有引起足够的重视，如能像重视石油那样重视水就不会发生水危机，因此C为答案。