西安交通大学23春《专业英语》在线作业
西1/2"《专业英语》在线作业00003试3/4碜芊?100得分100
西安交通大学2023年春季学期作业
?、单选题(共50道试题共100分)
1.Theobjectiveoftheoptimaleconomicoperationofpowersystemsis_____.
A.tominimizethetotalproductioncost
B.tomaintainfrequencyconstant
C.tomaintainvoltagesconstant
D.toensurebalancebetweengenerationandload
答案A
2.Theelectricmachinethatoperatesatspeedsabovesynchronousspeedworksin_____region.
A.motoring
B.generating
C.plugging
D.stopping
答案B
3.()isusedascoolantinlightwaterreactors.
A.Gas
B.Organiccompound
C.Moltensalt
D.Water
答案
4.Thetoyboatturnedoverandsanktothe(_______)ofthepool.
A.base
B.depth
C.ground
D.bottom
答案
5.Howmuchamancanearndepends(_______)hisskills.
A.along
B.at
C.on
D.with
答案C
6.Finallytheteacherrealizedthatthegirlwascrying____.
A.becausewhathehadsaid
B.becausethathehadsaid 奥鹏作业答案
C.becauseofwhathehadsaid
D.becauseofthathehadsaid
答案C
7.Thegeneratorvoltagesareusuallysteppeduptothetransmissionvoltagelevelby_____.
A.seriescapacitor
B.parallelreactors
C.stepuptransformers
D.stepdowntransformers
答案C
8.Wehavecometoacriticalmoment.Youmusttakeimmediate(_______).
A.act
B.action
C.activity
D.doings
答案B
9.Itisgenerallyconsideredunwisetogiveachild____heorshewants.
A.however
B.whatever
C.whichever
D.whenever
答案B
10.Canyoucomeoverfordinnerwithus?(_______)
A.IdliketobutIhaveameetingtonight
B.Itdoesntmatter
C.NoIdontlike
D.Ohthatsoundswell
答案A
11.Thankyoueversomuchforthebookyougaveme.(_______).
A.Nothanks
B.I’mgladyoulikeit
C.Yesitisgood
D.Noit’snotsogood
答案B
12.Sheisaneasygoinggirl._________youmeethershewillsmiletoyou.
A.As
B.Everything
C.While
D.Since
答案B
13.ThenewEnglishbookIboughtyesterday(_______)mealmosttwentyyuan.
A.spent
B.paid
C.cost
D.owned
答案C
14.Letsgobycar.Its_______.
A.cheapalot
B.cheapmuch
C.morecheap
D.muchcheaper
答案
15.Imageclarityonacomputerscreenismeasuredwith_____.
A.screensize
B.dotpitch
C.resolution
D.colordepth
答案B
16.TheBuck(1/2笛故1/2变""器)isa()converter.
A.voltagestepup
B.currentstepdown
C.currentstepup
D.resistance
答案C
17.Whenaninductionmotorwith10polesissuppliedby50Hzthreephaseacpowersourcethesynchronousrevolutionsperminuteis_____.(Synchronousr/min=120f/p)
A.1000
B.900
C.700
D.600
答案
18.——Haveagoodrestyouneedto___yourenergyforthefootballmatchthisafternoon.——Thanksalot.
A.leave
B.save
C.hold
D.get
答案B
19.Hereyeswerefilled(_______)tears.
A.of
B.with
C.in
D.along
答案B
20.Inacoalfiredpowerplantanelectrostaticprecipitatorisusedtoremove_____fromthecombustiongases.
A.solidparticle
B.SO2
C.CO
D.watervapour
答案A
21.MayIhavealookatyourphotoalbum?(_______).
A.Yesyouhave
B.It’sveryinteresting
C.Thisismygirlfriend
D.Yesofcourse
答案
22.Theyhavelessonseveryday(_______)Saturday.
A.except
B.exceptfor
C.exceptthat
D.besides
答案A
23.I’llmakeevery(_______)tohelpyou.
A.way
B.means
C.method
D.effort
答案
24.Mostdesktopcomputersuseaseparate_____asadisplaydevicewherenotebookcomputersuseaflatpanelLCDscreen(liquidcrystaldisplayscreen)thatattachedtothesystemunit.
A.keyboard
B.Mouse
C.Monitor
D.harddisk
答案C
25.Theunitoflogarithmofthemagnitudeofatransferfunctionis_____.
A.radianspersecond
B.volts
C.decibel
D.octaves
答案C
26.TheteacheradvisedJoeto___beforedecidingtoquitschool.
A.thinkabout
B.thinktwice
C.thinkup
D.thinkover
答案B
27.Theredroseisher(_______).
A.favor
B.favorite
C.like
D.best
答案B
28.Besureto(_______)yourworkattheendoftheexam.
A.lookover
B.hangup
C.setaside
D.catchsightof
答案A
29.________you________freetomorrow?–No.I________freethedayaftertomorrow.
A.Aregoingtowill
B.Aregoingtobewill
C.Aregoingtowillbe
D.Aregoingtobewillbe
答案
30.Itwasonthebeach(_______)MissWhitefoundthecatlyingdead.
A.where
B.which
C.onwhich
D.that
答案
31.LivinginthecentralAustraliandeserthasitsproblems___gettingwaterisnottheleast.
A.forwhich
B.towhich
C.inwhich
D.ofwhich
答案
32.Shewouldmakeateacherfar(_______)totheaverage.
A.superior
B.better
C.favorable
D.popular
答案A
33.Ihavenodoubt(_______)hewillovercomeallhisdifficulties?r)
A.which
B.what
C.that
D.If
答案C
34.Thisoneisnotgoodthatoneis____.
A.morebad
B.evenworse
C.stillworst
D.morebadly
答案B
35.Whenyouhavedifficultiesintranslatingthearticledon’t(_______)toaskme.
A.hesitate
B.hesitant
C.hesitance
D.hesitation
答案A
36.AsIfeltsomuchbettermydoctor(_______)metotakeaholidaybythesea.
A.suggested
B.considered
C.advised
D.inquired
答案C
37.Acomputerprinteris_____devicethatproducescomputergeneratedtextorgraphicalimagesonpaper.
A.aninput
B.anoutput
C.astorage
D.adataprocessing
答案B
38.Thevillagewas(_______)twoorthreegroupsofsimplehousesachurchapostofficeandasmallgeneralstore.
A.composedof
B.consistedof
C.madeof
D.builtwith
答案A
39.TheDCDCconverts_____inputto_____output.
A.directcurrentalternatingcurrent
B.directcurrentdirectcurrent
C.alternatingcurrentalternatingcurrent
D.alternatingcurrentalternatingcurrent
答案B
40.ThetransformerisastraightforwardapplicationofFaraday’s______Law.
A.Ohm’s
B.ElectromagneticInduction
C.Kirchhoff’sCurrent
D.Kirchhoff’sVoltage
答案B
41.MustIbehomebeforeseven?(_______).
A.Noyouneedn’t
B.Noyoumustn’t
C.OK
D.noyouwon’t
答案A
42.Theseheavywallsexpressedmansfearoftheouterworldandhisneedtofind(_______).
A.prevention
B.protection
C.preservation
D.preparation
答案B
43.Mypain___obviousthemomentIenteredtheofficeforthefirstmanImetaskedpitifully“Areyoufeelingallright?”
A.couldbe
B.couldhavebeen
C.mustbe
D.musthavebeen
答案
44.Theshipsetoutforthe(_______)oftheoceandepths.
A.exploration
B.explosion
C.expose
D.exposition
答案A
45.Theseareall(_______)demands.
A.reasonable
B.available
C.logical
D.formal
答案A
46.Charlie________herenextmonth.
A.isntworking
B.doesntworking
C.isntgoingtoworking
D.wontwork
答案D
47.Wegotothecinema(_______)aweek.
A.often
B.once
C.seldom
D.usually
答案B
48.ThestoryofGeorgeWashingtonandthecherrytreeis(_______)everyAmericanschoolchild.
A.knownas
B.knownto
C.knownfor
D.knownin
答案B
49.TheproposalseemsquitegoodbutIcan’teasily(_______)withoutallthefacts.
A.join
B.judge
C.say
D.speak
答案B
50.—IsthereanythingIcandoforyousir?—___.
A.Sure.Goahead
B.No.Takeyourtime
C.Yes.You’rewelcome
D.Notnow.Thanksanyway
答案D
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