1、补 全 短 文Passage 1 Functions of power transmission CEADBThe 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 networksP
2、assage 2 Substation misoperation and its preventing CEABDThe misopemtion that can lead to (1) mainly are：on-load switching of 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
3、persons from illegal entering the lived bayE. the grounding wire (closing the grounding switch) with power onPassage 3 A brief introduction on the development of supercritical boilers and their main advantages BDEACIn (1) such as U.S.A，Japan and European countries，the supercritical。 。 。A. good homog
4、enization of distributionB. some advanced countriesC. 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
5、， 。 。 。A. first generating steamB. an electrically heated 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 breaker BDAECCircuit breakers are automatically operated high voltage (or high cur
6、rent) switches.。 。 。A to perform any switching operation 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-stor
7、age power plant BDACEFor pumped-storage power plant, generally the ratio of distance to height (l), 。 。 。A. is most economicB. 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
8、 cells BAECDFuel cells are devices that when a fuel such as hydrogen or hydrogen-rich compounds and oxygen 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
9、fuel cellsE. as they are being developed there have been some applicationsPassage 8 Substations pace 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. simulatio
10、n training technology for substation operationC. 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 lit
11、tered with trash. In this trash, however, (1) 。 。 。A. 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 EBDACTh
12、e weather in winter. Call be very cold. Some animals sleep during the 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 wake up and lo
13、ok around for foodD. Hibernating animals dont need to eat much because 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 is 。 。 。A. The bigger and heavier a body is, the greater is its force of gravityB. I
14、t circles the Earth and is therefore know as a satellite of the EarthC. To get out into space we have to overcome the Earths gravitational pullD. A satellite stays in orbit because the planet gravitational force keeps pulling it into a circleE. Artificial satellite can be used for various purposesPa
15、ssage 12 Secondary equipment in power system BDEACThe secondary equipments 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 equipment
16、s that send the command signalsE. current values in secondary systemPassage 13 Switching overvoltage EABCDA sudden change in the configuration of transmission network caused (1) or by the appearance of a fault can。 。 。 。A. determine the insulation requirements of transmission linesB. the cost of tra
17、nsmission and 1ine failure rateC. at both opening and closing of circuit breakersD. 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 ca
18、lled power transmission line. 。 。 。A. transmitted from power plants step-up substation 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
19、15 Transformer insulation CEABDThe insulation of a transformer can be categorized into internal insulation and external insulation. 。 。 。A. The main insulation materials inside transformer are transformer oilB. The degradation of insulating properties of insulation materials under long period of inf
20、luenceC. The internal insulation refers to the insulation of various parts inside the oil tankDIf the winding temperature is within the scope of 80140 oCE. The main insulation refers to the insulation between windings and grounding parts and the insulation between windingsPassage 16 The electricity
21、market BDAECThe aim of introducing market mechanism is to bring various parties more。 。 。A. to agree 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 mo
22、st convenient，clean，safe，and useful form of energy which supplies 。 。 。A. its growth rateB. its unavailabilityC. the lack of electricity (a blackout)D. social disorder, and even national tragedyE. high electric power consumption per capitaPassage 18 Copyright piracy BDAECThere are numerous examples
23、of what has become known as copyright piracy. 。 。 。A. new chemicals B. the research and developmentC. physical propertyD. the fake and real itemsE. the intellectual propertyPassage 19 Electrical energy DEBACElectrical energy is the presence and flow of an electric charge. 。 。 。A. Alternating current
24、B. electrical energyC. Electrical potentialD. static electricityE. electrical chargePassage 20 Solar energy ADBCEMany people think of alternative solar energy as a new technology, 。 。 。A. sustainableB. inefficientC. the collected energy is used to heat a fluidD. the best known is photovoltaic cellsE
25、. efficientPassage 21 Electrical energy conservation CDEABElectrical energy conservation refers to the process of reducing energy used through various means. 。 。 。A. turning the thermostat up in the summer and down in the winterB. looking for other opportunities for electrical energy conservation in the homeC. reducing energy consumption can be undertaken at homeD. making use of alternative clean energy sourcesE. contributing to climate change
