niusouti.com

What is most likely to be discussed in the paragreh that follows?A.Steps to improving water use managet.B.Ways tor redjuce the costs of builing dams.C.Measured to dmal with worldwide water shortages.D.Appmihes to handling the pressure on water supply.

题目

What is most likely to be discussed in the paragreh that follows?

A.Steps to improving water use managet.

B.Ways tor redjuce the costs of builing dams.

C.Measured to dmal with worldwide water shortages.

D.Appmihes to handling the pressure on water supply.

相似考题

1.What keeps Grimsvotn still?A. The slow flow of waterB. The low water temperatureC. The thick glacierD. The water pressure

2.Which of the following is true?A.The water in Texas have been reduced by 75%.B.Most industries in the world suffer from water shortagers.C.The underground water in Saudi Arabia might run out in 50 years.D.Good management of water use resulted from the project in the Central Valley.

3.The text is mainly about .A.water supply and increasing populationB.water use management and agricultureC.water redistribution and wildlife protectionD.water shornages and environmental protection.

4.EThe need to feed a growing population is putting much pressure on the world’s supply of water. With 97% of the world’s water too salty to be drunk or used in agriculture, the worldwide supply of water needs careful management, especially in agriculture. Although the idea of a water shortage（短缺）seems strange to someone fortunate enough to live in a high rainfull country, many of the world’s agricultural industries experience constant water shortages.Although dams can be built to store water for agricultural use in dry areas and dry seaons, the costs of water redistribution(重新分配)are very high. Notonly is there the cost of the engineering itself, but there is also an environmental cost to be considered. Where valleys(山谷)are flooded to create dams, houses are lost and wildlife homes destroyed. Besides, water many flow easily through pipes to fields,but it cannot be transported from one side of the world to the other. Each country must therefore rely on the management of its own water to supply its farming requirements.This is particularly troubling ro countries with agricultural industries in areas dependent on irrigation（灌溉）. In Texas, farmers’ overuse of irrigation water be resulted in a 25% redcution of the water stores. In the Central Valley area of south eastern USA, a huge water engineering project provided water for farming in dry vallege, but much of the water use has been poorly managed.Saudi Arabia’s attempts to grow wheat in desert areas have been the pumping of huge quantities of irrigation water from underground reserves. Because there is no rainfall in these areas, such reserves can only decrease, and it is believed that fifty years of pumping will see them run dry.72. From the first two paragraphs we learnt that _______.A.much of the world’s water is available for useB.people in high rainfll countries feel luckyC.the costs of water redistribution should be consideredD.water can be easily carried through pipes across the world

更多“What is most likely to be discussed in the paragreh that follows?A.Steps to improving water use managet.B.Ways tor redjuce the costs of builing dams.C.Measured to dmal with worldwide water shortages.D.Appmihes to handling the pressure on water supply.”相关问题

  • 第1题：

    29． The writer thinks that people in large cities should __________ ．

    A． stop the used water from getting into underground

    B． only use the water from the rivers

    C． make their used water clean again

    D． use as much sea water as possible


    正确答案：C
    29.C【解析】由第四、五两段的描述可知，作者认为大城市的水应该被净化后重新利用。

  • 第2题：

    What is the most usual reason for the fresh water-sea water heat exchanger fouling in the sea side?

    A.lube oil sludge accumulating in it

    B.dirt and scale etc , formed on the surfaces

    C.deformation of the tubes and the shell or the plates

    D.lube oil leakage into sea-water side


    正确答案：B

  • 第3题：

    The most common type of containment device for spilled oil on the water is the use of _____.

    A.straw

    B.booms

    C.skimmers

    D.chemical dispersants


    正确答案：B

  • 第4题：

    The water we drink and use is running short in the world.We all have to learn how to stop wasting our limited water.One of the steps we should take is to find ways of reusing it.Experiments have already been done in this field.
    Today in most large cities,fresh water is used only once,then it runs into waste system.But it is possible to pipe the used water to a purifying factory.There it can be filtered and treated with chemicals so that it can be used again,just as it were fresh from a spring.
    But even if every large city purified and reused its water,we still would not have enough.Then we could turn to the oceans.All we’d have to do to make use of the seawater on earth is to get rid of the salt.This process is called desalinization,and it is already in use in many parts of the world.
    The way to stop wasting our limited water is to________.

    A.do experiments with water
    B.purify the used water and reuse it
    C.use fresh water once again
    D.make use of seawater

    答案：B
    解析：

  • 第5题：

    Farmers use water in many ways.（） they use water to grow crops.

    • A、In fact
    • B、For example
    • C、Besides
    • D、Because of this

    正确答案:B

  • 第6题：

    单选题
    What does the bottled water industry use in its own defense?
    A

    Bottled water is much cleaner than tap water.

    B

    Students should have freedom of choice.

    C

    The bottles are made in a more environment-friendly way.

    D

    Water is healthier than some sodas and juices.


    正确答案： D
    解析：

  • 第7题：

    单选题
    We use （） to distill fresh water from sea water.
    A

    engine

    B

    sea water pump

    C

    cylinder cooler

    D

    fresh water generator


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    What alarm is NOT found on an inert gas system? （）
    A

    Low oxygen alarm

    B

    Low pressure alarm

    C

    Scrubber high water level alarm

    D

    Deck seal low water alarm


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    Farmers use water in many ways.（） they use water to grow crops.
    A

    In fact

    B

    For example

    C

    Besides

    D

    Because of this


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    The second stage feed-water temperature and shell absolute pressure in a multistage, flash type, distilling plant is （）
    A

    higher than the first stage feed-water temperature and absolute shell pressure

    B

    lower than the first stage feed-water temperature and absolute shell pressure

    C

    the same as the first stage feed-water temperature and absolute shell pressure

    D

    not related to the feed-water temperature and absolute shell pressure


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    The main propulsion diesel engine jacket water temperature rises above normal, with the raw water sea suction and the expansion tank water level being normalWhich of the following problems is most likely the cause?（）
    A

    Faulty thermostatic bypass valve

    B

    Eroded zinc pencils in the heat exchanger

    C

    Steam formation in the expansion tank

    D

    Excessive leakage from jacket water pump seal


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    The boiler feed pump discharge pressure is higher than the steam drum pressure to （）.
    A

    ensure feed water flow into the boiler

    B

    keep the steam drum pressure high

    C

    prevent water hammer in the feed line

    D

    help the feed water flash to steam


    正确答案： D
    解析： 暂无解析

  • 第13题：

    The main propulsion diesel engine jacket water temperature rises above normal, with the raw sea suction and the expansion tank water level being normal. Which of the following problems is most likely the cause?

    A.Faulty thermostatic bypass valve

    B.Eroded zinc pencils in the heat exchanger

    C.Steam formation in the expansion tank

    D.Excessive leakage from jacket water pump seals


    正确答案：A

  • 第14题：

    what chemicals did you use to treat the boiler water ?when you test alkalinity and acidity of water in boiler by pH test paper ? the result shows the boiler water is in acidiity . please describe what the possible cause is .


    正确答案：I have ever used the following brand chemicals :unitor , drew and so on . We should keep the boiler water’s ph scale between 10.5 and 11.5 . If the water become of acidity ( ph scale is below 10 ) ,it is may be caused by following reasons : The water has not been given enough blow down ,or has not been filled enough alkalinity chemicals

  • 第15题：

    What alarm is NOT found on an inert gas system ________．

    A.Low oxygen alarm

    B.Low pressure alarm

    C.Scrubber high water level alarm

    D.Deck seal low water alarm


    正确答案：A

  • 第16题：

    Farmers use water in many ways.（） they use water to grow crops.

    AIn fact

    BFor example

    CBesides

    DBecause of this


    B
    略

  • 第17题：

    单选题
    Supposing there is a water container. The taller the container, ______ at the bottom.
    A

    greater will the water pressure be

    B

    the water pressure will be greater

    C

    the greater the water pressure will be

    D

    greater the water pressure will be


    正确答案： C
    解析：
    假设这里有一个装水的容器，容器越高，容器底部所受的压强就越大。这里考查越…越…的英文表达方式，C项正确，即the more...the more....的形式。

  • 第18题：

    单选题
    Supposing there is a water container. The taller the container, _____at the bottom.
    A

    greater will the water pressure be

    B

    the water pressure will be greater

    C

    the greater will be the water pressure

    D

    greater the water pressure will be


    正确答案： C
    解析：
    句意：假设这里有一个装水的容器，容器越高，容器底部所受的压强就越大。这里考查越…越…的英文表达方式，C项正确，即the more...the more....的形式。

  • 第19题：

    单选题
    The three conditions which cause engine shutdown are overspeed，low lube oil pressure，and（）.
    A

    High lube oil pressure

    B

    High jacket water pressure

    C

    High jacket water temperature

    D

    Low jacket water pressure


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    The most common type of containment device for spilled oil on the water is the use of （）.
    A

    straw

    B

    booms

    C

    skimmers

    D

    chemical dispersants


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    In a diesel engine jacket water cooler, with seawater cooling the fresh water, the（）
    A

    sea water temperature must never be warmer than 40℃

    B

    jacket water pressure should always be greater than the sea water pressure

    C

    jacket water temperature must always be less than 60℃

    D

    jacket water pressure must always be less than the sea water pressure


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    In a closed cooling water system, which of the problems can cause the water pressure to fluctuate?（）
    A

    An open vent in the cooling system

    B

    A fouled sea chest

    C

    A restricted water passage in the engine

    D

    Air entrained in the cooling water


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    During loading and discharging operations，in addition to when the cargo tanks have been properly filled，each inert gas system must be capable of maintaining a minimum gas pressure of（）.
    A

    150 millimeters of water pressure

    B

    125 millimeters of water pressure

    C

    100 millimeters of water pressure

    D

    75 millimeters of water pressure


    正确答案： C
    解析： 暂无解析

相关内容