- 相關(guān)推薦
2017年備考職稱英語《理工A》概括大意真題及答案
概括大意主要考察考生的英語單詞儲匯量。以下是百分網(wǎng)小編精心為大家整理的關(guān)于備考2017年職稱英語《理工A》概括大意真題及答案，希望對大家有所幫助!更多內(nèi)容請關(guān)注應(yīng)屆畢業(yè)生網(wǎng)!
Geothermal(地?zé)?Energy
1.Since heat naturally moves from hotter regions to cooler ones, the heat from the earth's center flows outwards towards the surface. In this way, it transfers to the next layer of rock. If the temperature is high enough, some of this rock melts and forms magma(巖漿). The magma ascends in its turn towards the earth's surface. It often remains well below the earth's surface, creating vast areas of hot rock. In such regions, there are deep cracks, which allow rainwater to descend underground. Some of the heated rainwater travels back up to the earth's surface where it will appear as a hot spring. However, if this ascending hot water reaches a layer of impermeable(不可滲透的)rock, it remains trapped, forming a geothermal reservoir. If geothermal reservoirs are close enough to the surface, they can be reached by drilling wells. Hot water and steam shoot up the wells naturally, and can be used to produce electricity in geothermal power plants.
2.A few geothermal power plants depend on dry-stem reservoirs which produce steam but little or no water. In these cases, the steam is piped up directly to provide the power to spin a turbine generator. The first geothermal power plant, constructed at Lardarello in Italy, was of this type, and is still producing electricity today.
3.Most currently operating geothermal power plants are either "flash" steam plants or binary(雙重的)plants. Flash plants produce mainly hot water ranging in temperature from 300° to 700°Fahrenheit. This water is passed through one or two separators where released from the pressure of the underground reservoir, it "flashes" or boils into steam Again, the force of this steam provides the energy to spin the turbine and produce electricity. The geothermal water and steam are then reinjected directly back down into the earth to maintain the volume and pressure of the reservoir. Gradually they will be reheated and can then be used again.
4.A reservoir with temperatures below 300° Fahrenheit is not hot enough to flash steam but it can still be used to generate electricity in binary fluid. The steam from this is used to power the turbines. As in the flash steam plant, the geothermal water is recycled back into the reservoir.
23.【題干】Paragraph1_____
【選項】
A.Dry steam plants
B.Binary plants
C.Origin of geothermal energy
D.Generation of electricity
E.Flash steam plants
F.Recyclable water and steam
【答案】C
24【題干】Paragraph2_____
【選項】
A.Dry steam plants
B.Binary plants
C.Origin of geothermal energy
D.Generation of electricity
E.Flash steam plants
F.Recyclable water and steam
【答案】A
25【題干】Paragraph3_____
【選項】
A.Dry steam plants
B.Binary plants
C.Origin of geothermal energy
D.Generation of electricity
E.Flash steam plants
F.Recyclable water and steam
【答案】E
26【題干】Paragraph4_____
【選項】
A.Dry steam plants
B.Binary plants
C.Origin of geothermal energy
D.Generation of electricity
E.Flash steam plants
F.Recyclable water and steam
【答案】F
27.【題干】A geothermal reservoir is formed when hot water is trapped under _____.
【選項】
A.the energy to turn a turbine
B.impermeable rock
C.one or two separators
D.turbine operator
E.little or no water
F.hot springs
【答案】B
28.【題干】A dry-steam reservoir produces steam with _____.
【選項】
A.the energy to turn a turbine
B.impermeable rock
C.one or two separators
D.turbine operator
E.little or no water
F.hot springs
【答案】E
29.【題干】Flash plants produce hot water through _____.
【選項】
A.the energy to turn a turbine
B.impermeable rock
C.one or two separators
D.turbine operator
E.little or no water
F.hot springs
【答案】C
30.【題干】In a binary plant, the heat of the geothermal water can be converted into _____.
【選項】
A.the energy to turn a turbine
B.impermeable rock
C.one or two separators
D.turbine operator
E.little or no water
F.hot springs
【答案】A
【備考職稱英語《理工A》概括大意真題及答案】相關(guān)文章：
職稱英語歷年真題《理工A》概括大意精選10-15
職稱英語歷年真題理工A概括大意精選08-03
2017年職稱英語理工A概括大意真題精選08-12
職稱英語《理工B》概括大意歷年真題精選10-17
職稱英語真題《衛(wèi)生A》概括大意09-23
2017職稱英語概括大意真題練習(xí)10-21
職稱英語歷年真題《綜合A》概括大意精選09-26
職稱英語真題《衛(wèi)生C》概括大意10-03
職稱英語歷年真題綜合A概括大意精選10-14