Key to the Exs1112文档格式.docx

Key to the Exs1112文档格式.docx

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8.Thereisanotherkindofforce（that）weneedtoconsider.

9.Nowthisdiseaseisnolongertheseriousproblem（that）itoncewas.

10.Theplaceswheresmallcomputerscanbeusedseem（tobe）endless.

11.Radarcanmeasurethetime（that）ittakesfortheradioechotoreturn.

12.Wemustcalculatethedistance（that/throughwhich）thebodyislifted.

13.Thedirection（that/inwhich）abodymovesisalsoveryimportant.

14.Itisnecessarytodeterminethenumberoftimes（that/bywhich）thisamplifieramplifiessignals.

15.Allweneed（to）dois（to）pressthisbutton.

16.Allonecansayisthatanatomconsistsofstillsmallerparticles.

17.I1ismuchlargerthanI2,inwhichcaseI2canbeneglected.

18.Weequatethesetworatios,fromwhichthesimplestformulafollows/results.

19.Thereason（why/forwhich/that）thiscomponentisusedhereisquiteclear.

20.Itisnecessarytodeterminethetime（when/atwhich/that）they-componenthasdecreasedtozero.

21.Wefirstdiscussthewaveswhosefrequencies/thefrequenciesofwhichareconstant.

22.Anyradio-frequencycomponent（that）theremaybe/that（there）mayexistinthiscircuitisfilteredoutbycapacitorC.

23.Wecanfindafewconditions,ofwhichonlytwo/onlytwoofwhicharenecessary.

24.Thecurvethey-coordinateofeachpointonwhichiszeroisjustthex-axis.

II.

1.Thepointatwhichthecirclecutstheaxisofrealsiswhereα=ω.

2.Wecanfindthesingleforcetowhichthesetwofactorsareequivalent.

3.TheparticularfrequencyatwhichXL=XCiscalledtheresonantfrequency.

4.Thesevectorsarenotaddedtheway（inwhich/that）numbersareadded.

5.Theforceofgravitymeanstheforcewithwhichtheearthattractsabody.

6.Thesurfaceofapicturetubeuponwhichtheelectronsproducethepictureiscalledthescreen.

7.Inallresistancesthroughwhichacurrentflows,electricalenergyisconvertedintoheatenergy.

8.Theproductofaforceandthetimeduringwhichitactsiscalledimpulse.

9.Thisresistoristheoneacrosswhichthenegativebiasisdeveloped.

10.Amagnetcancauseanelectriccurrentinawirenearwhichitismoved.

11.Anymechanicaldevicebywhichheatisconvertedintoworkiscalledaheatengine.

12.Theauthorwouldliketoexpressthankstotheeditorsoftheseriesofwhichthisbookisapart/towhichthisbookbelongs.

13.Thisisaparallelogramofwhichthetwogivenvectorsaresides.

14.Thepressureisequaltothetotalforcedividedbytheareaoverwhichitisexerted.

15.Thetwoelementsofwhichwaterconsistsarehydrogenandoxygen.

16.Thisdependsontheefficiencywithwhichelectronsareproduced.

17.Thesetwolawsarethefoundationonwhichallotherlawsarebuilt.

18.Thesubstancesinwhichtherearemanyfreeelectronsareconductors.

19.Itisnecessarytoexplainthereasonforwhichthisdeviceisusedhere.

20.Thetemperatureatwhichwaterfreezesisgenerally0oC.

III.

1.Asweshallsee,acidsandbasesplayanimportantroleinthefunctioningoflife.

2.Asthetitleindicates,thischapterwilldiscussnonlinearequations.

3.Asthenamesshows,afluidisasubstancewhichflowsreadily.

4.Aswasdiscussedinthepreviouschapter,atransistorisacurrent-controldevice.

5.Thiswaveformhasadccomponent,aswillbeexplainedlater.

6.Thissingleforceproducesthesameeffectasisproducedbythoseforcestogether.

7.Thesignofthechargedoesnotaffecttheconclusion,ascanbeseenreadily.

8.Nowweareabletosolvesuchdifferentialequationsasoccurinphysics.

9.Thisfunctioncanbeaccomplishedbyusingthefulladderaswasdescribedintheprevioussection.

10.Radiowavestravelatthesamespeedaslight.

11.Torricelli’semptinesswillappearontheupperpartofthetube,orvacuumaswenowcallit（=whatwecallvacuum）.

12.Theseconceptsenablesustounderstandawiderangeofphenomenainelectrostatics,or“staticelectricity,”asitiscalled.

OR:

…,orwhatiscalled“staticelectricity”

13.Thisrevisionresultedinthecreationofhigh-speedmechanics,orasitisreferredto,“relativisticmechanics.”

OR:

…,orwhatisreferredtoas“relativisticmechanics”.

14.Thiscurrentis,aspredicted,verysmall.

15.Firstletusconsiderthesimplestcircuitasshownonpage2.

IV.

1.Thisisaslightlyhighervaluethanwepredicted.

2.Manymoreproblemsarepresentedthanneedbegivenashomeworkassignments.

3.Nearlyallamplifiersrequiremoreamplificationthanonlyonetransistorcanachieve.

4.Thisreactorcanproducemorefuelthanitconsumes.

5.Letusconsiderthecasewhenthetorqueiszero.

6.Wemustdeterminethevaluesofcurrentsandvoltagesaftertheswitchcloses.

7.Itisnecessarytofirstfindthelimitascapproachesinfinity.

8.Duringthe10yearssincethisbookwasfirstpublished,significantchangeshavetakenplace（=havebeenseen）inplasticsindustry.

V.

Inthespringof2003,asanewtypeofinfectiousdisease,theSARSattackedtheglobe（=Thespringof2003sawthesuddenattackoftheglobebytheSARS,anewtypeofinfectiousdisease）.Itsorigin,developingtrendandtherapeuticschedulearethetopicswhicharetobeurgentlytackled,buttheyaredifficultproblemsfullofnumerousunknowns.Itisfromtheviewpointofstatisticsthatthispaperpresentsamathematicalmodelfor/ofthedevelopingtrendofSARScases.Thefunctionp（t）for/ofthevariationofthenumberofcaseswithtimeconsistsoftwoparts.

Forthereadertounderstandtheguidelineofthoughtforthederivationofthemodel,letusconsiderthefactorswhichfollow（=thefollowingfactors）.Itisworthpointingoutthattheparametersofthemodelarenotinvariable.Atthesametime/Alsoitisnecessarytopaymuchattentiontothedegreetowhichvariousmeasureshavebeenputinplace.

VI.

1.Eveninthiscasetheseprotocolscanprovidealimitednumberofuserswiththeacceptablequalityofvoiceservice.

2.AcomparisonofthismethodwiththeMEImethodshowsthatthethirdpostulateintheMEImethodisquestionable.

3.Thispaperpresentsamethodforan8089microcontrollertoseries-communicatewitha386personalcomputer.

4.ThispaperdealsmainlywiththeWienerfilteringofandtheLMSalgorithmforsuchsignals.

5.Theeffectofequalizerparametersonequalizationperformanceisanalyzedindetail.

Adetailedanalysisismadeoftheeffectofequalizerparametersonequalizationperformance.

6.EachreceiverchannelinFig.1containsanRFamplifier,amixer,anIFamplifier,anA/Dconverter,etc.

7.Thelargertheabnormalextent（is）,thelargertheresidualmismatchis,withthecurvegoingup.

8.Ahighlandwildplant,JUEMAbelongstotherosefamily.（=JUEMAisahighlandwildplantbelongingtotherosefamily.）Itcontainsvitaminsandelementssuchasiron,magnesium,calcium,（and）zinc.Pharmacologicalstudyshowsthattakingitforalongtime（=along-termintake）willprolonglife,resistcancerandreduceweight.Itisalsoagoodgiftforyourrelativesandfriends.

Ex.12

1.Shouldanythingabnormalhappen,switch/turnoffthepowersupplyatonce/immediately.

2.Iftherewereno（=Without）gravitation,everythingwouldflyofftheearthintospace.

3.Ifmanmadeuseofallthesunlight,hewouldhavenoneedforcoalorotherfuels.

4.Ifthischangeweretobeincluded（=shouldbeincluded）intheanalysis,itwouldbecomeextremelycomplex..

5.Discontinueshouldaskinreactionoccur.

6.Hadelectroniccomputersnotbeenused,itwouldhavetakenthemalongtimetosolvethisproblem.

7.Topursuethisdevelopmentofmoleculartheoryfurtherwouldtakeusintotheareaofatomicandnuclearstructure.

8.Itisveryimportantthatallsolutions（should）becheckedintheoriginalequation.

9.Itissuggestedthatthisdesign（should）bemodifiedatonce.

10.Thisrequiresthatthetransistor（should）beprobablybiased.

11.Withoutsemiconductors,satellitecommunicationswouldbeimpossible.

12.WecouldalsohaveusedTheorem6toderivetheresult.

13.Itisquiteessentialthatdesigners（should）haveapracticalknowledgeofcomputers.

14.Thiscomesfromthenecessitythattheoutput（should）bestable.

15.Therequirementthatenergy（should）beconservedmustbesatisfied.

16.Anecessaryconditionisthattheintegration（should）beasolutionof/toEuler’sequation.

17.Theirsuggestionisthatthispoint（should）begrounded.

18.Thistransmissionlineactsasifitwereopen-circuited.

19.Itlookedasiftheanswertothisproblemhadbeenwrong.

20.Everythinghere,beitacomponentoradevice,ishomemade.

21.Couldapinbedrawnintoawireofthethicknessofoneatom,itwouldencircletheearththousandsoftimes.

22.Theconditionthatx-a（should）dividethenumeratoristhatx=a（should）bearoot.

1.Itwasthisscientistwho/thatdiscoveredthisphenomenonacenturyago.

2.Itisthisconclusionwithwhichweareconcerned.

Itisthisconclusionwhich/thatweareconcernedwith.

3.Thismethoddoeswork.