Passage 4 Power plant
According to the mode of energy…… of capacity should not exceed two.
1. √ Ba on energy conversion, power plants are divided into more than 7 categories.
2. × A power plant tries to transform energy source into electric power.
3. √ The power plant generating electricity and supplying steam is called a co-generation plant.
4. × A power net plan for short and medium term is one of factors in lecting a site.the strokes
5. √ Two important factors for a new plant plan are fuel supply and ash disposal.
become的意思
6. × Environmental protection is less considered in building a new power plant.
7. × Water sources and transportation conditions are not needed to consider in lecting a new site.
8. √ The total capacity in a newly scheduled plant arranges from 1200MW to 3600MW.
9. × The number of units exceeds more than six.
10. √ The ranks of capacity should be limited within two.
Passage 13 Australia
Australia is a vast continent……,if not months.
1. × Australia is a large country and has a relativel large population
2.√ The majority of people living in Australia are city dwellers
3. × The delivery of education rvices to people living in remote areas is unimaginable for almost a century
4.√ The attempt to provide educational rvices to distant dwellers did not take place until 1916
5. × The schoolwork was delivered and returned through aled roads,regular bus routes and air rvices in the beginning
Passage 18 The obama administration’s bank rescue proposal
Among the criticisms of the obama administration’s bank rescue proposal……of us should follow.
1. × The obama administration’s bank rescue proposal is criticized becau the amount of money is too huge.
2. × The word "float"(para.3)means "to move without an aim".
3.√According to the author, ordinary Americans don’t have much cash the days .
4. × The bailout plan is so complex and risky that the world’s major banks utterly misjudged them.
5.√ The last paragraph indicates that the baiout plan needs support from big investors.
Passage 14 Biomass
Biomass is a cost-effective source of energy.……of renewable energy.
1.√As a source of energy ,biomass can bring the best possible profits for the lowest possible costs
2.√One of the advantages of using biomass is that it is a convenient medium to store energy
3. × Biomass doesn’t produce enough carbon dioxide and is harmless to the environment.
4.√Despite its advantages ,biomass is not suitable for commercial uscs
5. × Only trees and crops can be ud as biomass-fuels.
Passage 10 Electricity
Electricity may be dangerous. …… him away from the power.
1. × Electricity is not dangerous as people think.
2. × Dry wood can carry electricity to the ground.
3. √ Conductors like metal or water can carry electricity to the ground.
4. × Human body is a good conductor becau it has 90% water in the body.
5. √ You can u a hairdryer far from bath and water.
6. √ We hands are good conductors for transmitting electricity.
7. √ The best tool to push a shocked person away from the power is to u a non-conductor.
模拟测试3-2
For centuries, in the countries……Land of the White Elephant.
Today, however, the story……very low national priority.
How this reversal from……but sure-footed elephant.
By 1950 the elephant population……a beast of burden declined.
1. What can we know about African elephants from the passage? B.it…hard…
2. Thailand was once called “Land of the White Elephant” becau＿B.white…1920s＿＿＿.
3. Why is the Thai elephant “out of work”, according to the author? A.bec…owners
4. Which of the following statements is true about the elephant population at various times? D.Today (150)
5. The passage is most probably from＿C.a…report＿＿＿.
Passage 9 Business and risks
Marx once quoted a famous saying in …… is written by Carl Marx.
1. √ The work Capitdism is written by Carl Marx.
2. × For 20% profit, capital will take risks.
3. √ For 100%, capital dares to break any human laws.
4. × For 200%, capital dares to commit any crime and even risks being hanged.
5. √ The pursuit of profits forces human beings to take any risks.
6. × The pursuit of profit is much more encouraged than the pursuit of friendship.
7. √ There are two ownerships existing in Chine economy.
8. × Only bright manufacturer or manager can predict the future of his enterpris.
Passage 15 Nuclear radiation
Nuclear power’s danger to health,.……by its grandparents.
1.√The mystery about nuclear radation may come from the fact that it cannot be detected by human ns
2. ×We cannot n radio activity without a radio receiver
3.√Common radio waves are harmless to human beings and other things .
4. × Even at the lowest levels, radiation will cau cancer by killing the healthy cells.
5.√Victims of nuclear radiation may die of cancer years later.
Passage 3 Optical fiber communication
Optical fiber communication is a kind of information…… is comparatively higher.
1. √ A kind of information communication is optical fiber communication.
animosity2. × The composite optical fiber ground wire is ldom ud in power system.
3. √ One of the transmission tasks of the optical fiber main network is to transmit administration telephones from power system.
4. √ Optical fiber communication has been the important communication method in power communication system.
5. × Large capacity of communication is not one of the advantages of optical fiber communication.
6. × The communication capacity of optical fiber is indirectly proportion to the carrier frequency.
7. √ The carrier frequency of power line is more than 300KHz.
8. × The carrier frequency of microwave is between 3000MHz and 5000MHz.
9. √ The main problem of the fiber-optic channel is the high price of fiber-optic equipment.
10. × The cables made by optical fiber are not expensive.
Passage 1 Feature of power generation
The simultaneousness of the electric power generation means that the electric power generation, transmission, transformation, distribution………… The electric power system consists of power plants, transmission networks, distribution networks and the consu
The unification of power system equipment…………It is simply called the power network.
The features of a modern power network frame are: (1)…………(3) The voltage class are simplifie
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1. × The electric power can be stored.
2. √ The power system is made up of 4 parts.
3. √ The unification of power system equipment is formed by 4 equipments.
4. √ A power system is an undivided integer.
5. × The power network can operate normally without the integration of other 3 equipments.
6. √ A link line is called a transmission line.
7. × A link line is formed by 3 power networks.
8. √ An electric power network is simply called a power network.
9. × The main network frame is formed by a weak EHV system.
回收站英文10. × The networks are not cloly linked with each other.
Passage 2 Types of circuit breaker
The high voltage circuit breaker is mainly compod of contactors, …… and SF6 circuit breaker.
1. √ Contactors, arc-extinguishing elements, insulation material and operating mechanism form the high voltage circuit breaker.
2. √ The insulation structure is make up of 3 parts.
3. × The arc-extinguishing medium can be divided into only 3 parts.
4. √ An oil circuit breaker means a circuit breaker with oil as arc-extinguishing and insulation medium.
5. × A vacuum circuit breaker is not a circuit breaker with clo and open contactors in high vacuum.
6. × A pure SF6 gas is not a good arc-extinguishing medium.
7. √ The insulation strength of SF6 gas is higher than air and vacuum.
8. √ An oil minimum circuit breaker is very safe in u.
9. × An oil minimum circuit breaker has bad heat dissipation capability.
10. √ An oil minimum circuit breaker is one of the mostly ud circuit breakers in the power grid.
Passage 5 Selection of metal material for the boiler in units of 1000MW grade.
Taking a general view of the 1000MW …… must be adopted.
1. √ The 10000MW grade high-efficiency supercritical unit ix designed and made in China.
2. × The temperature of main steam and reheated steam reach basically between 570 to 650℃.
3. √ The tube wall temperature of superheater and reheater can reach more than 600 to 650℃
4. √ The anti-high temperature steam oxidation performance at tube inner surface is highly demanded.
5. × The anti-high temperature flue gas corrosion performance at tube outside surface is not highly demanded.
6. √ The temperature limit of T91 for u is abort 593℃.
7. × The temperature limit of T92 for u is less 620℃.
8. √ The temperature of austenite stainless steel for normal u is abort 650℃.
9. × The temperature limit of austenite stainless steel is less than 700℃.
10. × Only heat-resisting steel can be adopted for u.
Passage 6 The role of the condenr
The condenr is a surface heat……from the exhaust steam temperature.
1. √ A condenr is a heat exchanger removing the vaporization heat from the exhaust steam and condensing the exhaust steam into water.
旗标2. √ It is suggested that the water should not be cooled below the saturation temperature.
鹿角菜3. × The saturation temperature would not remove excess energy from the system and reduce the overall efficiency.
4. × It is unnecessary to reduce the steam to water so that it can be pumped back through the syste杨桃的英文
boobiesm.
5. × The condenr does not control back-pressure at the turbine exhaust.
6. √ The important factor controlling the turbine backpressure is the temperature of the cooling water passing through the condenr tubes.
7. √ The temperature of cooling water will increa its temperature between 15℉ and 20℉ as it pass through the condenr.
8. √ The terminal difference means the temperature difference between the cooling water and the turbine exhaust steam.
9. × The temperature increa of the cooling water and the terminal difference depend on 3 factors.
10. × The exhaust steam temperature does not rely on the temperature of the cooling water which enters the condenr.
Passage 7 Hydraulic structure
The lected type of dam of hydraulic power plant depends principally on topographic, …… be analyzed and studied.
1. √ The type of dam for hydraulic power plant depends on many factors.
2. √ The main purpo of the dam safety monitoring is to monitor the performance indexes.
3. × The equipment installed inside the dam is to discover the normality of dam in time.
the bird4. × Horizontal displacement is more important than vertical displacement.
5. × Temperature stress and strain are the two main monitoring items of dam.
6. √ The monitoring method is the suitable points in the dam and its foundation.
7. × Some monitoring devices are movable for periodical supervision.
8. × The monitoring result shall be analyzed and studied by computers.
Passage 8 heat treatment
The purpo of post-weld heat …… display device and control device.
1. √ The post-weld heat treatments have two main purpos.
2. √ One of the purpos is to diminish the residual stress in the welded joints.
3. × The other purpo is to improve the organization of the welded joints.
4. √ The welding crack can be classified into 5 categories.
5. √ To change the internal structure of the work piece is one of purpos for heat treatment.
6. × There are 5 kinds of steel heat treatment.
7. √ The process of heat treatment include 4 procedures.
8. × The electric resistance furnace is not widely ud.
9. × Heat treatment furnaces are not compod of electric resistance furnace, combustion furnace and surface heating device.
10. × The control device for heat treatment temperature is compod of temperature measuring element, and control device.
Passage 11 Undera Life
The undera word is ……becomes blue and green.
1. √ Everything under the a becomes blue and green.
2. √ Now people can dive into the water to explore the crets of the a.
3. √ You can stay in deep blue a for a ling time if you have bottles of air on your back.
4. × It is warm but dark in deeper water.
5. √ Under about 3000 feet, there is no light at all.
6. × Many fish under deep water have eyes like normal fish in water.
7. √ The a animals must follow the rule to eat or be eaten.
