國家電網公司專業(yè)技術人員電力英語水平考試寶典補全短文

1、補全短文Passage 1 Functions of power transmissionCEADBThe function of (1) is to send power from power plants to load center or to exchange。A. step-down substations and connected transmission equipmentB. power network operationC. power transmissionD. transmission at high voltageE. power networksPassage 2

2、 Substation misoperation and its preventing Themisopemtion that can lead to (1) mainly are isolating switch；A. preventing the misoperation in substationB. the closing of grounding switch with power onC. accidents in the electrical operation of the substationD. the persons from illegal entering the l

3、ived bayE. the grounding wire (closing the grounding switch) with power onPassage 3 A brief introduction on the development of supercritical boilers and their mainadvantages BDEACIn (1) such as，Japan and European countries，the supercriticalA. good homogenization of distributionB. some advanced count

4、riesC. whole process management is strengthenedD. great advantages oil economy and environmental protectionE. subcritical once-through boilerPassage 4 Steam generation and use BEADCSteam is one of mans dependable servants More and more in the background，。A. first generating steamB. an electrically h

5、eated homeC. use of steam for electric power generationD. the new generating capacity being installedE. the fuel is uranium and the heat is suppliedPassage 5 Circuit breakerBDAECCircuit breakers are automatically operated high voltage (or high current) switches.。Ato perform any switchi ng operati on

6、 after long periodsB. to control electrical power networksC. of the circuit breakerD. to switch the current which can be from a few amperesE. of the highest importance for high reliabilityPassage 6 The ratio of distance to height of pumped-storage power plant BDACEFor pumped-storage power plant, gen

7、erally the ratio of distance to height(l),。A. is most economicCEABD: on-load switching ofB. is used to evaluate topographic condition of power plantC. is not desirableD. is the ratio of horizontal distance between upper and low reservoirE. is the bestPassage 7 Fuel cells BAECDFuel cells are devices

8、that when a fuel such as hydrogen or hydrogen-rich compounds andoxygen are supplied to。A . further development is under wayB. there is no storage capacity in a fuel cellC. many cells are operated in series to obtain voltagesD. supply alternating current from fuel cellsE. as they are being developed

9、there have been some applications Passage 8 Substationspace into the Digital Age CAEBDSubstations constitute the main part of power transmission and distribution in a power grid.。A. substation automation technology has reached a certain levelB. simulation training technology for substation operation

10、C. composed of a large number of primary and secondary equipmentsD. a full-digital automation systemE. all of which has become an indisputable factPassage 9 Overcoming the Problem of Waste CADEBMany large cities are anything but beautiful Streets are littered with trash.In this trash, however, (1)。A

11、. there is no time to be lostB. building beautiful cities out of garbage is only a dreamC. there is still something that can be usefulD. it can be put to use againE. more and more machines are designed for this purposePassage 10 Hibernation EBDACThe weather in winter. Call be very cold. Some animals

12、 sleep during winter,。A.So they dont need to worry about bad weather and other dangerous animalsB. We call this kind of sleep in wintertime“hibernationC. As it gets warmer and warmer in spring，the sleeping animals begin to wakeup and look around for foodD.Hibernating animals dont need to eat much be

13、cause they dont moveE. They can sleep for a long timePassage 11 Satellites BDACEThe body that is neatest to the Earth is the moon. (1). This satellite isA. The bigger and heavier a body is, the greater is its force of gravityB. It circles the Earth and is therefore know as a satellite of the EarthC.

14、 To get out into space we have to overcome the Earths gravitational pulltheD. A satellite stays in orbit because the planet gravitational force keeps pulling it into a circleE. Artificial satellite can be used for various purposesPassage 12 Secondary equipment in power system BDEACThe secondary equi

15、pments in power system are (1), measuring，regulating，。A. 5A rated current of the current transformer secondary windingB. the equipments that provide protecting，monitoringC. 50V rated voltage of PT secondary sideD. the equipments that send the command signalsE. current values in secondary systemPassa

16、ge 13 Switching overvoltage EABCDA sudden change in the configuration of transmission network caused (1) or by the appearanceof a fault can。A. determine the insulation requirements of transmission linesB. the cost of transmission and 1ine failure rateC. at both opening and closing of circuit breaker

17、sD. by means of circuit breaker closing resistor in 500kV systemE. by the operation of a circuit breakerPassage 14 Transmission line and distribution line ADBCEThe high voltage power line through which power is (1) is called power transmission line.。A. transmitted from power plants step-up substatio

18、n to step-down substationB. the overhead transmission lineC. lightning frequently happening and heavy rainingD. the power line that transmits the power from step-down substationE. 1arge spanning line sectionPassage 15 Transformer insulation CEABDThe insulation of a transformer can be categorized int

19、o internal insulation and externalinsulation.。A. The main insulation materials inside transformer are transformer oilB. The degradation of insulating properties of insulation materials under long period ofinfluenceC. The internal insulation refers to the insulation of various parts inside the oil ta

20、nkD.If the winding temperature is within the scope of 80140CE. The main insulation refers to the insulation between windings and grounding parts and theinsulation between windingsPassage 16 The electricity marketBDAECThe aim of introducing market mechanism is to bring various parties more。A. to agre

21、e on the price and quantity to be tradedB. a wholesale marketC. to register as a market customerD. a retail marketE. to choose electricity suppliersPassage 17 Electric power CBDAEElectric power is a most convenient，clean，safe，and useful form of energywhich supplies。A. its growth rateB. its unavailab

22、ilityC. the lack of electricity (a blackout)D. social disorder, and even national tragedyE. high electric power consumption per capita Passage 18 Copyright piracyBDAECThere are numerous examples of what has become known as copyright piracy.A. new chemicalsB. the research and developmentC. physical propertyD. the fake and real itemsE. the intellectual propertyPassage 19 Electrical energyDEBACElectrical energy is the presence and flow of an electric charge.A. Al