2017年职称英语概括大意与完成句子真题训练
沉湎于希望的人和守株待兔的`樵夫没有什么两样。以下是小编为大家搜索整理的2017年职称英语概括大意与完成句子真题训练,希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!
第3部分:概括大意与完成句子
Geothermal(地热) Energy
1 Since heat naturally moves from hotter regionsto cooler ones, the heat from the earth's center flows outwards towards thesurface. In this way. it transfers to the next layer of rock. If thetemperature is high enough, some of this rock melts and forms magma (岩浆). The magma ascends in its turn towards theearth's surface. It often remains wen below the earth s surface, creating vastareas of hot rock. In such regions, there are deep cracks, which allowrainwater to descend underground. Some of the heated rainwater travels back upto the earth's surface where it will appear as a hot spring. However, ifthis ascending hot water reaches a layer of impermeable (不可渗透 的)rock, it remains trapped, forming a geothermal reservoir. If geothermal reservoirs are closeenough to the surface, they can be reached by drilling wells. Hot water andsteam shoot up the wells naturally, and can be used to produce electricity ingeothermal power plants.
2 A few geothermal power plants depend ondry-steam reservoirs which produce steam but little or no water. In thesecases, the steam is piped up directly to provide the power to spin a turbinegenerator. The first geothermal power plant, constructed at Lardarello inItaly, was of this type, and is still producing electricity today.
3 Most currently operating geothermal powerplants are either "flash" steam plants or binary (双重的) plants. Flash plants produce mainly hotwater ranging in temperature from 300℃ to 700℃ Fahrenheit. This water is passed through one or two separatorswhere released from the pressure of the underground reservoir, itHashes" or boils into steam Again, the force of this steam provides theenergy to spin the turbine and produce electricity. The geothermal water andsteam are then reinjected directly back down into the earth to maintain the volumeand pressure of the reservoir. Gradually they will be reheated and can then beused again.
4 A reservoir with temperatures below 300℃ Fahrenheit is not hot enough to flash seam but it can still be used togenerate electricity in a binary fluid. The steam from this(参照图片) isused to power the turbines. As in the flash steam plant, the geothermal water is recycled backinto the reservoir.
graph 1_____C____
graph 2____A_____
graph 3____E_____
graph 4____B_____
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
27. A geothermal reservoir is formed when hotwater is trapped under__B____.
28. A dry-steam reservoir produces steam with___D___.
29. Flash plants produce hot water through___C___.
30. In a binary plant, the heat of the geothermalwater can be converted into__A____.
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
-
2018年职称英语考试技巧大纲
职称英语是目前参与人群最多的`职业资格考试之一,涉及在职人员职称晋升、工资评定等切身利益。以下是应届毕业生网为大家提供的2018年职称英语考试技巧,希望对大家的考试有所帮助。一、综合实战技巧原则:先熟(先做熟悉)先易难(先做容易)先(先做握)二、综合实战步...
-
2017职称英语试题卫生B级词汇选项习题
2017职称英语考试备考开始拉开序幕,为了帮助大家更好地备考,下面是yjbys网小编提供给大家关于职称英语试题卫生B级词汇选项习题,希望对大家的备考有所帮助。第1部分:词汇选项(第115题,每题l分,共15分)下面每个句子均有l个词或短语划线,请为每处划线部分确定l个意义最...
-
职称英语理工类阅读判断真题训练
阅读在英语考试中所占比例较大,想要通过英语考试,一定要掌握好阅读题,下面小编为大家搜索整理了职称英语理工类阅读判断真题训练,希望能给大家带来帮助!更多精彩内容请持续关注我们应届毕业生考试网!SoMany"Earths"TheMilkyWay(银行)containsbillionsofEarth-sized...
-
2017职称英语理工阅读真题
勤奋靠的是毅力,是永恒。文学家说,勤奋是打开文学殿堂之门的一把钥匙;科学家说,勤奋能使人聪明;而政治家说,勤奋是实现理想的基石;而平凡的人则说,勤奋是一种传统的美德。可见,勤奋富有了多么巨大的底蕴与魅力,人类如果丢弃了它,绝对不行。以下是小编为大家搜索整理的2...