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共用题干
Obtaining Drinking Water from Air Humidity
Not a plant to be seen,the desert ground is too dry.But the air contains water,and research scientists
have found a. __________
(51)of obtaining drinking water from air humidity."The process we have
developed is based exclusively on renewable energy sources_________(52)thermal solar collectors and
photovoltaic（光电的）cells , ________( 53 ) makes this method completely energy-autonomous. It will
____________( 54 ) function in regions where there is no electrical infrastructure（基础设施）,"says Siegfried
Egner,head of the research team. The principle of the_________(55)is as follows:hygroscopic（吸湿的）
brine（盐水）一saline（含盐的）solution which absorbs moisture一runs down a tower-shaped unit and absorbs
water from the air. It is then sucked__________(56)a tank a few meters off the ground in which a vacuum
prevails.Energy from solar collectors_________(57)up the brine,which is diluted by the water it has
__________ (58).
Because of the vacuum,the boiling point of the liquid is lower than it would be under__________(59)
atmospheric pressure. The evaporated (蒸发的）, non-saline water is condensed and runs down through a
completely filled tube in a controlled manner. The gravity of this water column_______(60)produces the
vacuum and so a vacuum pump is not needed.The reconcentrated brine________(61)down the tower
surface again to absorb moisture from the air.
"The concept is suitable for various water________(62).Single一person units and plants
supplying water to entire hotels are conceivable,"says Egner. Prototypes have been built for_______
(63)system components一air moisture absorption and vacuum evaporation一and the research scientists
have already __________(64)their interplay on a laboratory scale.In a further ________(65)the re-
searchers intend to develop a demonstration facility.
Obtaining Drinking Water from Air Humidity
Not a plant to be seen,the desert ground is too dry.But the air contains water,and research scientists
have found a. __________
(51)of obtaining drinking water from air humidity."The process we have
developed is based exclusively on renewable energy sources_________(52)thermal solar collectors and
photovoltaic（光电的）cells , ________( 53 ) makes this method completely energy-autonomous. It will
____________( 54 ) function in regions where there is no electrical infrastructure（基础设施）,"says Siegfried
Egner,head of the research team. The principle of the_________(55)is as follows:hygroscopic（吸湿的）
brine（盐水）一saline（含盐的）solution which absorbs moisture一runs down a tower-shaped unit and absorbs
water from the air. It is then sucked__________(56)a tank a few meters off the ground in which a vacuum
prevails.Energy from solar collectors_________(57)up the brine,which is diluted by the water it has
__________ (58).
Because of the vacuum,the boiling point of the liquid is lower than it would be under__________(59)
atmospheric pressure. The evaporated (蒸发的）, non-saline water is condensed and runs down through a
completely filled tube in a controlled manner. The gravity of this water column_______(60)produces the
vacuum and so a vacuum pump is not needed.The reconcentrated brine________(61)down the tower
surface again to absorb moisture from the air.
"The concept is suitable for various water________(62).Single一person units and plants
supplying water to entire hotels are conceivable,"says Egner. Prototypes have been built for_______
(63)system components一air moisture absorption and vacuum evaporation一and the research scientists
have already __________(64)their interplay on a laboratory scale.In a further ________(65)the re-
searchers intend to develop a demonstration facility.
_________(52)
A:in spite of
B:because of
C:as a result of
D:such as
A:in spite of
B:because of
C:as a result of
D:such as
参考答案
参考解析
解析：根据上下文可知“科研人员发现了一种从空气里的水分中获取饮用水的方法”，所以 选C。
such as表示“比如”，用于列举。
此处为非限制性定词从句，所以用which。
根据上文“这使得该方法在能量方面完全自主”可知，这里指“即使在没有电力基础设 施的地方仍可起到作用”，所以选D。
根据上下文可知“这套工序的原理如下”，所以选B。
suck into表示“吸入”。
根据上下文可知这里指“来自太阳能收集器的能量将盐水加热”。
absorb表示“吸收”，这里指稀释所吸收的水。
normal“正常的”，这里指“在真空环境中，液体的沸点要比在正常大气压下低。”
continuously“不间断地”;suddenly“突然地”;typically“典型地”;senously“严重地”。根据上下文可知，这里指“水柱的重力持续制造真空状态，所以不需要真空泵”。
run原意为“跑”，但这里是“流动”的意思，run down“沿着······流动”。根据上下文可知“二次浓缩的盐水会沿着塔状物再次向下流去吸收空气中的水”，所以选D。
根据上下文可知“这一理念适用于各种各样的水的使用者”，所以选A。
both"（两者）都”；因为这里是强调空气水汽吸收器和真空蒸汽机两个机器之间的作用 效果，所以选A。
这里指“科研人员已经在实验室里测试了它们相互作用的效果”，所以选C。
step“步骤”;instrument“工具”;case“案例”;ground“地面”。根据上下文可知“在下一步 的研究中，研究者会开发出一套用于展示的设备”，所以选B。
such as表示“比如”，用于列举。
此处为非限制性定词从句，所以用which。
根据上文“这使得该方法在能量方面完全自主”可知，这里指“即使在没有电力基础设 施的地方仍可起到作用”，所以选D。
根据上下文可知“这套工序的原理如下”，所以选B。
suck into表示“吸入”。
根据上下文可知这里指“来自太阳能收集器的能量将盐水加热”。
absorb表示“吸收”，这里指稀释所吸收的水。
normal“正常的”，这里指“在真空环境中，液体的沸点要比在正常大气压下低。”
continuously“不间断地”;suddenly“突然地”;typically“典型地”;senously“严重地”。根据上下文可知，这里指“水柱的重力持续制造真空状态，所以不需要真空泵”。
run原意为“跑”，但这里是“流动”的意思，run down“沿着······流动”。根据上下文可知“二次浓缩的盐水会沿着塔状物再次向下流去吸收空气中的水”，所以选D。
根据上下文可知“这一理念适用于各种各样的水的使用者”，所以选A。
both"（两者）都”；因为这里是强调空气水汽吸收器和真空蒸汽机两个机器之间的作用 效果，所以选A。
这里指“科研人员已经在实验室里测试了它们相互作用的效果”，所以选C。
step“步骤”;instrument“工具”;case“案例”;ground“地面”。根据上下文可知“在下一步 的研究中，研究者会开发出一套用于展示的设备”，所以选B。
更多 “共用题干 Obtaining Drinking Water from Air HumidityNot a plant to be seen,the desert ground is too dry.But the air contains water,and research scientistshave found a. __________(51)of obtaining drinking water from air humidity."The process we have developed is based exclusively on renewable energy sources_________(52)thermal solar collectors andphotovoltaic（光电的）cells , ________( 53 ) makes this method completely energy-autonomous. It will ____________( 54 ) function in regions where there is no electrical infrastructure（基础设施）,"says Siegfried Egner,head of the research team. The principle of the_________(55)is as follows:hygroscopic（吸湿的） brine（盐水）一saline（含盐的）solution which absorbs moisture一runs down a tower-shaped unit and absorbs water from the air. It is then sucked__________(56)a tank a few meters off the ground in which a vacuum prevails.Energy from solar collectors_________(57)up the brine,which is diluted by the water it has__________ (58).Because of the vacuum,the boiling point of the liquid is lower than it would be under__________(59) atmospheric pressure. The evaporated (蒸发的）, non-saline water is condensed and runs down through a completely filled tube in a controlled manner. The gravity of this water column_______(60)produces the vacuum and so a vacuum pump is not needed.The reconcentrated brine________(61)down the tower surface again to absorb moisture from the air."The concept is suitable for various water________(62).Single一person units and plantssupplying water to entire hotels are conceivable,"says Egner. Prototypes have been built for_______(63)system components一air moisture absorption and vacuum evaporation一and the research scientistshave already __________(64)their interplay on a laboratory scale.In a further ________(65)the re- searchers intend to develop a demonstration facility._________(52)A:in spite ofB:because ofC:as a result ofD:such as” 相关考题
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共用题干
Obtaining Drinking Water from Air HumidityNot a plant to be seen,the desert ground is too dry.But the air contains water,and research scientistshave found a. __________(51)of obtaining drinking water from air humidity."The process we have developed is based exclusively on renewable energy sources_________(52)thermal solar collectors andphotovoltaic（光电的）cells , ________( 53 ) makes this method completely energy-autonomous. It will ____________( 54 ) function in regions where there is no electrical infrastructure（基础设施）,"says Siegfried Egner,head of the research team. The principle of the_________(55)is as follows:hygroscopic（吸湿的） brine（盐水）一saline（含盐的）solution which absorbs moisture一runs down a tower-shaped unit and absorbs water from the air. It is then sucked__________(56)a tank a few meters off the ground in which a vacuum prevails.Energy from solar collectors_________(57)up the brine,which is diluted by the water it has__________ (58).Because of the vacuum,the boiling point of the liquid is lower than it would be under__________(59) atmospheric pressure. The evaporated (蒸发的）, non-saline water is condensed and runs down through a completely filled tube in a controlled manner. The gravity of this water column_______(60)produces the vacuum and so a vacuum pump is not needed.The reconcentrated brine________(61)down the tower surface again to absorb moisture from the air."The concept is suitable for various water________(62).Single一person units and plantssupplying water to entire hotels are conceivable,"says Egner. Prototypes have been built for_______(63)system components一air moisture absorption and vacuum evaporation一and the research scientistshave already __________(64)their interplay on a laboratory scale.In a further ________(65)the re- searchers intend to develop a demonstration facility._________(51)A:roadB:channelC:wayD:path
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共用题干
Obtaining Drinking Water from Air HumidityNot a plant to be seen,the desert ground is too dry.But the air contains water,and research scientistshave found a. __________(51)of obtaining drinking water from air humidity."The process we have developed is based exclusively on renewable energy sources_________(52)thermal solar collectors andphotovoltaic（光电的）cells , ________( 53 ) makes this method completely energy-autonomous. It will ____________( 54 ) function in regions where there is no electrical infrastructure（基础设施）,"says Siegfried Egner,head of the research team. The principle of the_________(55)is as follows:hygroscopic（吸湿的） brine（盐水）一saline（含盐的）solution which absorbs moisture一runs down a tower-shaped unit and absorbs water from the air. It is then sucked__________(56)a tank a few meters off the ground in which a vacuum prevails.Energy from solar collectors_________(57)up the brine,which is diluted by the water it has__________ (58).Because of the vacuum,the boiling point of the liquid is lower than it would be under__________(59) atmospheric pressure. The evaporated (蒸发的）, non-saline water is condensed and runs down through a completely filled tube in a controlled manner. The gravity of this water column_______(60)produces the vacuum and so a vacuum pump is not needed.The reconcentrated brine________(61)down the tower surface again to absorb moisture from the air."The concept is suitable for various water________(62).Single一person units and plantssupplying water to entire hotels are conceivable,"says Egner. Prototypes have been built for_______(63)system components一air moisture absorption and vacuum evaporation一and the research scientistshave already __________(64)their interplay on a laboratory scale.In a further ________(65)the re- searchers intend to develop a demonstration facility._________(56)A:fromB:atC:aboveD:into
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共用题干
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单选题Why do some people get sick after drinking the water from the river?A
Because the river is pollutedB
Because the river makes the earth more beautifulC
Because the river can only offer water to animalsD
Because there are too many animals and plants in the river
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单选题What is head tank in the closed cooling water system used for?（）A
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单选题The main purpose of starting the diesel engine on air briefly is（）A
to inspect if the cylinder has the water leakageB
to expel out the residual water/gas/oil from the cylinderC
to check if fuel supply is normalD
A and B
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单选题请阅读 Passage 1，完成第 21~25小题。Passage 1These days，many large city buildings are equipped with their own air-conditioning systems.These systems help keep the buildings cool，but they can also damage the environment.Since they use a lot of electricity，for instance，they contribute indirectly to global warming.In addition，the water that flows through the systems is often cooled using chemicals called chlorofluorocarbons，or CFCs，that are believed to damage the Earth's ozone layer.Recently，though，a system has been built in the city of Toronto，Canada，that cools buildings with little damage to the environment. In the traditional air-conditioning systems found in most large buildings，water is pumped through the building in a continuous cycle.The water is first cooled to a temperature of 4℃ in machines called chillers.It is then sent to individual units that cool the air in each room.As the water flows through the building，it gradually becomes warmer.Finally，it reaches the roof ，where it is left to cool down naturally in a water tower.After that it is returned to the chillers，where the cycle begins again.Toronto lies on the shore of Lake Ontario，one of North America's Great Lakes，and the new system makes use of cold water taken from about 80 meters below the surface of the lake.At this depth，the water in the lake remains at 4℃ all year round.This is exactly the temperature to which the water in air-conditioning systems is cooled.However，the water from the lake is not pumped directly into the air-conditioning systems.Instead，it is used to cool the water that is already inside the air-conditioning systems.After that，the lake water is added to the city's ordinary water supply.Enwave，the company that developed this deep-lake cooling system，says that it uses 75 percent less energy than traditional air conditioning.And since no CFCs are used，no damage can be caused to the ozone layer.Not every city is located next to a large lake，but experts believe that systems like the one being used in Toronto could be built elsewhere by using other natural sources of cold water.What happens in the end to the water from Lake Ontario?A
It is used by the residents of Toronto.B
It is returned to a place deep in the lake.C
It is cooled down before being used again.D
It is added to the water inside air-conditioning systems.
考题
单选题As the air passes through the charge air cooler, its temperature may be reduced and moisture condensed, with the condensate in danger of being carried into the engineSo a water separator should be mounted beneath the bottom part of the engine inlet manifoldA water separator is used in order to （）.A
keep the air from being carried into the engineB
keep the moisture from being condensedC
keep the danger from being carded into the engineD
take away the condensate from the air
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问答题Practice 1 Heat loss by sweating depends on the fact that when a liquid evaporates, it absorbs an enormous quantity of heat from its surroundings. Therefore, when I am of sweat evaporate, a great deal of heat is absorbed from the surface of the body in contact with it. 1______ 2______ The first is the amount of movement of air surrounding the body. The second is the amount of water vapor in the air that surrounds the body. 3______ For this reason, sweat evaporates very rapidly on windy days, and the rate of heat loss by sweating is much more than on a still day. This accounts for the fact that hot still days are much less comfortable than hot windy days. In contrast, the sweat evaporates very rapidly on hot windy days, and cools the body quickly and effectively. 4______ When air is carrying the maximum amount of water vapor that it can hold, it is said to be 100% saturated with water vapor. The relative humidity of the air is said to be 100%. Under these conditions the air cannot carry any water, so no water can evaporate. When the relative humidity is high, therefore, sweat cannot evaporate. Instead, it forms large drops and runs off your skin without cooling you. 5______ It is obvious that under these conditions, evaporation will be much more rapid. Therefore, sweating will be much more effective as a method of losing heat from the body. On a hot dry day, sweat evaporates as soon as it is formed, and you feel reasonably cool even though the temperature of your environment is very high.[A] When the air is very dry and carries no water at all, the relative humidity is said to be 0%.[B] The second factor is the amount of water vapor in the air－the humidity.[C] Hot windy days are much more comfortable than hot still days.[D] This heat transfer occurs even if the environment is hotter than the body.[E] When air moves over the surface of water, the amount of evaporation is greatly increased.[F] You might expect the highest incidence of a heat stroke when the maximum temperature is 100 and humidity is 50%.[G] Two factors affect the rate of evaporation of sweat, and therefore the effectiveness of sweating as a method of cooling the body.
考题
单选题The engine is started with （） supplied from air receivers.A
pressure oilB
pressure waterC
compressed airD
cooling water
考题
单选题Vents are led from the engine to head tank （） from the cooling water.A
for the release of airB
for the release of waterC
in order to the release of airD
because the release of air
考题
单选题Which statement concerning the collection of fresh water is FALSE?（）A
Fresh water may be obtained from fishB
lifeboat covers or canopies should be washed with rain before drinking water is collectedC
Fresh water may be collected from condensation inside the life-raftD
Freshwater cannot be produced from standing seawater
考题
单选题Which statement concerning the collection of fresh water is FALSE?（）A
Fresh water may be obtained from fishB
Lifeboat covers or canopies should be washed with rain before drinking water is collectedC
Fresh water may be collected from condensation inside the liferaftD
Seawater should never be consumed
考题
单选题The air spaces in the floor of an inflatable liferaft will provide protection against（）.A
asphyxiation from CO2B
loss of air in the sides of the raftC
rough seasD
cold water temperatures
考题
单选题Which of the following methods is normally used to control the temperature of air distributed from individual cooling coils in an air conditioning system using a chilled water circulation system?（）A
A room thermostat activates an electric heater at each individual chilled air outlet when necessaryB
Varying the number of passes the air makes across the coilsC
Varying the temperature of the water through the coilsD
Varying the quantity of water flowing through the coils
考题
单选题Steam smoke will occur when（）.A
Extremely cold air from shore passes over warmer waterB
Warm dry air from shore passes over cooler waterC
Cold ocean water evaporates into warm airD
Cool rain passes through a warm air mass
考题
单选题请阅读 Passage 1，完成第 21~25小题。Passage 1These days，many large city buildings are equipped with their own air-conditioning systems.These systems help keep the buildings cool，but they can also damage the environment.Since they use a lot of electricity，for instance，they contribute indirectly to global warming.In addition，the water that flows through the systems is often cooled using chemicals called chlorofluorocarbons，or CFCs，that are believed to damage the Earth's ozone layer.Recently，though，a system has been built in the city of Toronto，Canada，that cools buildings with little damage to the environment. In the traditional air-conditioning systems found in most large buildings，water is pumped through the building in a continuous cycle.The water is first cooled to a temperature of 4℃ in machines called chillers.It is then sent to individual units that cool the air in each room.As the water flows through the building，it gradually becomes warmer.Finally，it reaches the roof ，where it is left to cool down naturally in a water tower.After that it is returned to the chillers，where the cycle begins again.Toronto lies on the shore of Lake Ontario，one of North America's Great Lakes，and the new system makes use of cold water taken from about 80 meters below the surface of the lake.At this depth，the water in the lake remains at 4℃ all year round.This is exactly the temperature to which the water in air-conditioning systems is cooled.However，the water from the lake is not pumped directly into the air-conditioning systems.Instead，it is used to cool the water that is already inside the air-conditioning systems.After that，the lake water is added to the city's ordinary water supply.Enwave，the company that developed this deep-lake cooling system，says that it uses 75 percent less energy than traditional air conditioning.And since no CFCs are used，no damage can be caused to the ozone layer.Not every city is located next to a large lake，but experts believe that systems like the one being used in Toronto could be built elsewhere by using other natural sources of cold water.What is one problem with traditional air-conditioning systems?A
The chemicals they use sometimes pollute the water supply.B
They often damage the buildings that they are trying to cool.C
There are not enough CFCs in the world to cool all the buildings.D
The method they use to cool water is thought to harm the ozone layer.
考题
单选题请阅读 Passage 1，完成第 21~25小题。Passage 1These days，many large city buildings are equipped with their own air-conditioning systems.These systems help keep the buildings cool，but they can also damage the environment.Since they use a lot of electricity，for instance，they contribute indirectly to global warming.In addition，the water that flows through the systems is often cooled using chemicals called chlorofluorocarbons，or CFCs，that are believed to damage the Earth's ozone layer.Recently，though，a system has been built in the city of Toronto，Canada，that cools buildings with little damage to the environment. In the traditional air-conditioning systems found in most large buildings，water is pumped through the building in a continuous cycle.The water is first cooled to a temperature of 4℃ in machines called chillers.It is then sent to individual units that cool the air in each room.As the water flows through the building，it gradually becomes warmer.Finally，it reaches the roof ，where it is left to cool down naturally in a water tower.After that it is returned to the chillers，where the cycle begins again.Toronto lies on the shore of Lake Ontario，one of North America's Great Lakes，and the new system makes use of cold water taken from about 80 meters below the surface of the lake.At this depth，the water in the lake remains at 4℃ all year round.This is exactly the temperature to which the water in air-conditioning systems is cooled.However，the water from the lake is not pumped directly into the air-conditioning systems.Instead，it is used to cool the water that is already inside the air-conditioning systems.After that，the lake water is added to the city's ordinary water supply.Enwave，the company that developed this deep-lake cooling system，says that it uses 75 percent less energy than traditional air conditioning.And since no CFCs are used，no damage can be caused to the ozone layer.Not every city is located next to a large lake，but experts believe that systems like the one being used in Toronto could be built elsewhere by using other natural sources of cold water.What is the function of the chillers in a traditional air-conditioning system?A
They pump the air continuously to the units in each room.B
They lower the temperature of the water in the system.C
They help the water cool down naturally on the roof .D
They gradually clean the water as it flows through the building.
考题
单选题What is NOT a function of the air supply of a covered lifeboat?（）A
Provides air for engine combustionB
Pressurizes water spray systemC
Provides air for passenger respirationD
Prevents smoke and other noxious fumes from entering craft
考题
单选题The purpose of an air compressor unloading device is to （）A
drain water from the air receiverB
drain water from the cylindersC
delay the compression process until the motor is up to speedD
check pump alignment
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