国家电网公司专业技术人员电力英语水平考试宝典补全短文

补全短文
Passage 1 Functions of power transmission CEADB
The function of (1) is to send power from power plants to load center or to exchange 。

A. step-down substations and connected transmission equipment
B. power network operation
C. power transmission
D. transmission at high voltage
E. power networks
Passage 2 Substation misoperation and its preventing CEABD
The misopemti on that can lead to (1) mai nly are :① on-load switch ing of isolat ing switch ；
A. preventing the misoperation in substation
B. the closing of grounding switch with power on
C. accidents in the electrical operation of the substation
D. the persons from illegal entering the lived bay
E. the grounding wire (closing the grounding switch) with power on
Passage 3 A brief introduction on the development of supercritical boilers and their main advantages BDEAC
In (1) such as U.S.A ，Japan and European countries ，the supercritical 。

A. good homogenization of distribution
B. some advanced countries
C. whole process management is strengthened
D. great advantages oil economy and environmental protection
E. subcritical once-through boiler
Passage 4 Steam generation and use BEADC
Steam is one of man 's dependable servants More and more in the background ，。

A. first generating steam
B. an electrically heated home
C. use of steam for electric power generation
D. the new generating capacity being installed
E. the fuel is uranium and the heat is supplied
Passage 5 Circuit breaker BDAEC
Circuit breakers are automatically operated high voltage (or high current) switches. 。

A • to perform any switchi ng operati on after long periods
B. to control electrical power networks
C. of the circuit breaker
D. to switch the current which can be from a few amperes
E. of the highest importance for high reliability
Passage 6 The ratio of distance to height of pumped-storage power plant BDACE For pumped-storage power plant, generally the ratio of distance to height (l),。

A. is most economic
B. is used to evaluate topographic condition of power plant
C. is not desirable
D. is the ratio of horizontal distance between upper and low reservoir
E. is the best
Passage 7 Fuel cells BAECD
Fuel cells are devices that when a fuel such as hydrogen or hydrogen-rich compounds and oxygen are supplied to 。

A . further development is under way
B. there is no storage capacity in a fuel cell
C. many cells are operated in series to obtain voltages
D. supply alternating current from fuel cells
E. as they are being developed there have been some applications Passage 8 Substations pace into the Digital Age CAEBD
Substations constitute the main part of power transmission and distribution in a
power grid. 。

A. substation automation technology has reached a certain level
B. simulation training technology for substation operation
C. composed of a large number of primary and secondary equipments
D. a full-digital automation system
E. all of which has become an indisputable fact Passage 9 Overcoming the Problem of Waste CADEB Many large cities are anything but beautiful Streets are littered with trash. In this trash, however,
(1) 。

A. there is no time to be lost
B. building beautiful cities out of garbage is only a dream
C. there is still something that can be useful
D. it can be put to use again
E. more and more machines are designed for this purpose Passage 10 Hibernation EBDAC
The weather in winter. Call be very cold. Some animals sleep during the winter,
A. So they don ' t need to worry about bad weather and other dangerous animals
B. We call this kind of sleep in wintertime “ hibernation ''
C. As it gets warmer and warmer in spring ，the sleeping animals begin to wake up and
look around for food
D. Hib ernating animals don ' t need to eat much because they don ' t move
E. They can sleep for a long time Passage 11 Satellites BDACE
The 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 gravity
B. It circles the Earth and is therefore know as a satellite of the Earth
C. To get out into space we have to overcome the Earth ' s gravitational pull
D. A satellite stays in orbit because the planet gravitational force keeps pulling it into a circle
E. Artificial satellite can be used for various purposes Passage 12 Secondary equipment in power system BDEAC
The secondary equipments in power system are (1), measuring ，regulating ，。

A. 5A rated current of the current transformer secondary winding
B. the equipments that provide protecting ，monitoring
C. 50V rated voltage of PT secondary side
D. the equipments that send the command signals
E. current values in secondary system Passage 13 Switching overvoltage EABCD
A 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 lines
B. the cost of transmission and 1ine failure rate
C. at both opening and closing of circuit breakers
D. by means of circuit breaker closing resistor in 500kV system
E. by the operation of a circuit breaker
Passage 14 Transmission line and distribution line ADBCE
The high voltage power line through which power is (1) is called power transmission line. 。

A. transmitted from power plant ' s step-up substation to step-down substation
B. the overhead transmission line
C. lightning frequently happening and heavy raining
D. the power line that transmits the power from step-down substation
E. 1arge spanning line section
Passage 15 Transformer insulation CEABD
The insulation of a transformer can be categorized into internal insulation and external insulation. 。

A. The main insulation materials inside transformer are transformer oil
B. The degradation of insulating properties of insulation materials under long period of influence
C. The internal insulation refers to the insulation of various parts inside the oil tank
D . If the winding temperature is within the scope of 80 〜140 o C
E. The main insulation refers to the insulation between windings and grounding parts and the insulation between windings
Passage 16 The electricity market BDAEC
The aim of introducing market mechanism is to bring various parties more 。

A. to agree on the price and quantity to be traded
B. a wholesale market
C. to register as a market customer
D. a retail market
E. to choose electricity suppliers
Passage 17 Electric power CBDAE
Electric power is a most convenient ，clean ，safe ，and useful form of energy which supplies 。

A. its growth rate
B. its unavailability
C. the lack of electricity (a blackout)
D. social disorder, and even national tragedy
E. high electric power consumption per capita
Passage 18 Copyright piracy BDAEC
There are numerous examples of what has become known as copyright piracy. 。

A. new chemicals
B. the research and development
C. physical property
D. the fake and real items
E. the intellectual property
Passage 19 Electrical energy DEBAC
Electrical energy is the presence and flow of an electric charge. 。

A. Alternating current
B. electrical energy
C. Electrical potential
D. static electricity
E. electrical charge
Passage 20 Solar energy ADBCE
Many people think of alternative solar energy as a new technology, 。

A. sustainable
B. inefficient
C. the collected energy is used to heat a fluid
D. the best known is photovoltaic cells
E. efficient
Passage 21 Electrical energy conservation CDEAB
Electrical 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 winter
B. looking for other opportunities for electrical energy conservation in the home
C. reducing energy consumption can be undertaken at home
D. making use of alternative clean energy sources
E. contributing to climate change。