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

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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 misopemtion that can lead to (1) mainly are:①on-load switching

of isolating 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 switching operation 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. Hibernating 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