2023年西安交通大学《专业英语》在线作业三

奥鹏西安交通大学新学期作业参考

西安交通大学新学期《专业英语》在线作业-00003

1.The objective of the optimal economic operation of power systems is _____.
选项A：to minimize the total production cost
选项B：to maintain frequency constant
选项C：to maintain voltages constant
选项D：to ensure balance between generation and load
正确答案问询微信：424329

2.The electric machine that operates at speeds above synchronous speed works in _____ region.
选项A：motoring
选项B：generating
选项C：plugging
选项D：stopping
正确答案问询微信：424329

3.( ) is used as coolant in light-water reactors.
选项A：Gas
选项B：Organic compound
选项C：Molten salt
选项D：Water
正确答案问询微信：424329

4.The toy boat turned over and sank to the (_______) of the pool.
选项A：base
选项B：depth
选项C：ground
选项D：bottom
正确答案问询微信：424329

5.How much a man can earn depends (_______) his skills.
选项A：along
选项B：at
选项C：on
选项D：with
正确答案问询微信：424329

6.Finally, the teacher realized that the girl was crying ____.
选项A：because what he had said
选项B：because that he had said
选项C：because of what he had said
选项D：because of that he had said
正确答案问询微信：424329

7.The generator voltages are usually stepped up to the transmission voltage level by _____.
选项A：series capacitor
选项B：parallel reactors
选项C：step-up transformers
选项D：step-down transformers
正确答案问询微信：424329

8.We have come to a critical moment. You must take immediate (_______) .
选项A：act
选项B：action
选项C：activity
选项D：doings
正确答案问询微信：424329

9.It is generally considered unwise to give a child ____ he or she wants.
选项A：however
选项B：whatever
选项C：whichever
选项D：whenever
正确答案问询微信：424329

10.Can you come over for dinner with us? —– (_______)
选项A：I'd like to but I have a meeting tonight
选项B：It doesn't matter
选项C：No, I don't like
选项D：Oh, that sounds well
正确答案问询微信：424329

11.Thank you ever so much for the book you gave me.
— (_______) .
选项A：No thanks
选项B：I’m glad you like it
选项C：Yes, it is good
选项D：No, it’s not so good
正确答案问询微信：424329

12.She is an easy-going girl. _________ you meet her, she will smile to you.
选项A：As
选项B：Everything
选项C：While
选项D：Since
正确答案问询微信：424329

13.The new English book I bought yesterday (_______) me almost twenty yuan.
选项A：spent
选项B：paid
选项C：cost
选项D：owned
正确答案问询微信：424329

14.Let's go by car. It's _______.
选项A：cheap a lot
选项B：cheap much
选项C：more cheap
选项D：much cheaper
正确答案问询微信：424329

15.Image clarity on a computer screen is measured with _____.
选项A：screen size
选项B：dot pitch
选项C：resolution
选项D：color depth
正确答案问询微信：424329

16.The Buck(降压式变换器) is a ( ) converter.
选项A：voltage step-up
选项B：current step-down
选项C：current step-up
选项D：resistance
正确答案问询微信：424329

17.When an induction motor with 10 poles is supplied by 50Hz three-phase ac power source, the synchronous revolutions per minute is _____. (Synchronous r/min = 120 f/p)
选项A：1000
选项B：900
选项C：700
选项D：600
正确答案问询微信：424329

18.——Have a good rest ; you need to ___your energy for the football match this afternoon .——Thanks a lot .
选项A：leave
选项B：save
选项C：hold
选项D：get
正确答案问询微信：424329

19.Her eyes were filled (_______) tears.
选项A：of
选项B：with
选项C：in
选项D：along
正确答案问询微信：424329

20.In a coal-fired power plant, an electrostatic precipitator is used to remove _____ from the combustion gases.
选项A：solid particle
选项B：SO2
选项C：CO
选项D：water vapour
正确答案问询微信：424329

21.May I have a look at your photo album?
— (_______) .
选项A：Yes, you have
选项B：It’s very interesting
选项C：This is my girl friend
选项D：Yes, of course
正确答案问询微信：424329

22.They have lessons every day (_______) Saturday.
选项A：except
选项B：except for
选项C：except that
选项D：besides
正确答案问询微信：424329

23.I’ll make every (_______) to help you.
选项A：way
选项B：means
选项C：method
选项D：effort
正确答案问询微信：424329

24.Most desktop computers 奥鹏西安交通大学新学期作业参考use a separate _____ as a display device, where notebook computers use a flat panel LCD screen (liquid crystal display screen) that attached to the system unit.
选项A：keyboard
选项B：Mouse
选项C：Monitor
选项D：hard disk
正确答案问询微信：424329

25.The unit of logarithm of the magnitude of a transfer function is _____.
选项A：radians per second
选项B：volts
选项C：decibel
选项D：octaves
正确答案问询微信：424329

26.The teacher advised Joe to___before deciding to quit school.
选项A：think about
选项B：think twice
选项C：think up
选项D：think over
正确答案问询微信：424329

27.The red rose is her (_______) .
选项A：favor
选项B：favorite
选项C：like
选项D：best
正确答案问询微信：424329

28.Be sure to (_______) your work at the end of the exam.
选项A：look over
选项B：hang up
选项C：set aside
选项D：catch sight of
正确答案问询微信：424329

29.-________ you ________ free tomorrow?– No. I ________ free the day after tomorrow.
选项A：Are;going to;will
选项B：Are;going to be;will
选项C：Are;going to;will be
选项D：Are;going to be;will be
正确答案问询微信：424329

30.It was on the beach (_______) Miss White found the cat lying dead.
选项A：where
选项B：which
选项C：on which
选项D：that
正确答案问询微信：424329

31.Living in the central Australian desert has its problems, ___getting water is not the least.
选项A：for which
选项B：to which
选项C：in which
选项D：of which
正确答案问询微信：424329

32.She would make a teacher far (_______) to the average.
选项A：superior
选项B：better
选项C：favorable
选项D：popular
正确答案问询微信：424329

33.I have no doubt (_______) he will overcome all his difficulties．
选项A：which
选项B：what
选项C：that
选项D：If
正确答案问询微信：424329

34.This one is not good, that one is ____.
选项A：more bad
选项B：even worse
选项C：still worst
选项D：more badly
正确答案问询微信：424329

35.When you have difficulties in translating the article, don’t (_______) to ask me.
选项A：hesitate
选项B：hesitant
选项C：hesitance
选项D：hesitation
正确答案问询微信：424329

36.As I felt so much better, my doctor (_______) me to take a holiday by the sea.
选项A：suggested
选项B：considered
选项C：advised
选项D：inquired
正确答案问询微信：424329

37.A computer printer is _____ device that produces computer-generated text or graphical images on paper.
选项A：an input
选项B：an output
选项C：a storage
选项D：a data processing
正确答案问询微信：424329

38.The village was (_______) two or three groups of simple houses, a church, a post office and a small general store.
选项A：composed of
选项B：consisted of
选项C：made of
选项D：built with
正确答案问询微信：424329

39.The DC-DC converts _____ input to _____ output.
选项A：direct current, alternating current
选项B：direct current, direct current
选项C：alternating current, alternating current
选项D：alternating current, alternating current
正确答案问询微信：424329

40.The transformer is a straightforward application of Faraday’s ______ Law.
选项A：Ohm’s
选项B：Electromagnetic Induction
选项C：Kirchhoff’s Current
选项D：Kirchhoff’s Voltage
正确答案问询微信：424329

41.Must I be home before seven?
— (_______) .
选项A：No, you needn’t
选项B：No, you mustn’t
选项C：OK
选项D：no, you won’t
正确答案问询微信：424329

42.These heavy walls expressed man's fear of the outer world and his need to find (_______) .
选项A：prevention
选项B：protection
选项C：preservation
选项D：preparation
正确答案问询微信：424329

43.My pain___obvious the moment I entered the office, for the first man I met asked pitifully, “Are you feeling all right?”
选项A：could be
选项B：could have been
选项C：must be
选项D：must have been
正确答案问询微信：424329

44.The ship set out for the (_______) of the ocean depths.
选项A：exploration
选项B：explosion
选项C：expose
选项D：exposition
正确答案问询微信：424329

45.These are all (_______) demands.
选项A：reasonable
选项B：available
选项C：logical
选项D：formal
正确答案问询微信：424329

46.Charlie ________ here next month.
选项A：isn't working
选项B：doesn't working
选项C：isn't going to working
选项D：won't work
正确答案问询微信：424329

47.We go to the cinema (_______) a week.
选项A：often
选项B：once
选项C：seldom
选项D：usually
正确答案问询微信：424329

48.The story of George Washington and the cherry tree is (_______) every American school child.
选项A：known as
选项B：known to
选项C：known for
选项D：known in
正确答案问询微信：424329

49.The proposal seems quite good, but I can’t easily (_______) without all the facts.
选项A：join
选项B：judge
选项C：say
选项D：speak
正确答案问询微信：424329

50.—Is there anything I can do for you, sir?— ___.
选项A：Sure. Go ahead
选项B：No. Take your time
选项C：Yes. You’re welcome
选项D：Not now. Thanks anyway
正确答案问询微信：424329