划分子网阶段采用 ()IP 地址结构

A、网络号—主机号
B、网络号—子网号—主机号
C、起始IP地址/网络号位数
D、起始IP地址/主机号位数
查看答案
正确答案:

B

答案解析:

暂无解析

上一题
你可能感兴趣的试题

IfonlyI_____playtheguitaraswellasyou!

A、would
B、could
C、should
D、might

Theauthortellsusinparagraph4________.

A、thereasonsforkeepingmedicinesathome
B、people'sdoubtabouttakingdrugs
C、whatkindofmedicinepeopleshouldprepareathome
D、thepossibleharmsself-medicationmaydotopeople

Passage3

Questions11to15arebasedonthefollowingpassage:

UnliketheirAmericanorEuropeancounterparts,carsalesmeninJapanworkhardtogetabuyer.Insteadoflyinglazilyaroundshowroomswaitingforcustomerstodropby,manyJapanesecarsalesmenstillgoouttogetthem.Theywalkwearilyalongthestreetscarsdoor-to-door.Newcustomersarehuntedwithfruitandcakesontheirbirthdays.Butlifeisgettingtough,andnotjustbecausenew-carsalesarefalling.

WithmoreJapanesewomen(whooftencontrolthehouseholdbudget)goingouttowork,thesalesmenincreasinglyfindnobodyathomewhentheycall.Thatmeansanothervisitintheeveningortheweekend.Thentheyfaceanextraproblem:morepeople,especiallytheyoung,prefertochooseanewcarfromashowroomwheretheycancomparedifferentmodels.

Evenaslateasthemid-1980ssome90%ofnewcarsweresolddoor-to-door.Insomeruralareasmostnewcarsarestillsoldthisway.Butinthebigcitiesmorethanhalfthenewcarsarenowsoldfromshowrooms.

AlthoughinvestinginshowroomsisexpensivebecauseofthehighcostofJapaneseland,dealershavelittlechoice.AlaborshortageandhigheramongJapan’sworkforcearemakingitdifficulttohiredoor-to-doorsalesmen.MostofaJapanesecarsalesman’sworkingdayisspentdoingfavorsforcustomers,likearranginginsuranceorpickingupvehiclesforservicing,ratherthanactuallyselling.

Japan’sdoorstepcarsalesmenarenotabouttovanish.Thepersonalservicetheyprovideissodeep-rootedinJapanthattheyarelikelytooperatealongsidetheglitteringnewshowrooms.Thetwosystemsevencomplementeachother.Whatincreasinglyhappensisthattheshowroomattractstheinterestofapotentialbuyer,givingthefootsoresalesmenafirmleadtofollowupwithahomevisit.

11.Japanesecarsalesusuallydonotwaitatshowroomsforcustomerstodropby;instead,.

A.theysellcarsdoor-to-door

B.theybuypresentsfortheircustomers

C.theyenjoythemselvesinrecreationcenters

D.theygoouttodomarketresearches

12.Impliedbutstated:thecompetitionincarmarketis.

A.lightB.moderateC.fierceD.unfair

13.Youngpeopleliketobuyanewcar.

A.athomeB.fromashowroom

C.madeintheU.S.A.D.madeinJapan

14.ThesquadronofJapanesecarsalesmenisreducingbecauseof.

A.alaborshortage

B.higherexpectationsamongJapan’sworkforce

C.highcostland

D.bothAandB

15.Japanesecarsalesmentotheircustomersmanyfavorssuchas.

A.showingthemaroundinanexhibition

B.arranginginsurance

C.payingthemavisitonweekends

D.sellingolecarsforthem

TEXTC

Therearetwofactorswhichdetermineanindividual'sintelligence.Thefirstisthesortofbrainheisbornwith.

Humanbrainsdifferconsiderably,somebeingmorecapablethanothers.Butnomatterhowgoodabrainhehas

tobeginwith,anindividualwillhavealoworderofintelligenceunlesshehasopportunitiestolearn.Sothe

secondfactoriswhathappenstotheindividual—thesortofenvironmentinwhichheisbroughtup.Ifan

individualishandicapped(不利)environmentally,itislikelythathisbrainwillfailtodevelopandhewillnever

attainthelevelofintelligenceofwhichheiscapable.Theimportanceofenvironmentindetermininganindividual'sintelligencecanbedemonstratedbythecasehistoryoftheidenticaltwins,PeterandMark.Beingidentical,thetwinshadidenticalbrainsatbirth,andtheirgrowthprocesseswerethesame.Whenthetwinswerethreemonthsold,theirparentsdied,andtheywere

placedinseparatefoster(抚养)homes.Peterwasraisedbyparentsoflowintelligenceinanisolatedcommunity

withpooreducationalopportunities.Markwasrearedinthehomeofwell-to-doparentswhohadbeentocollege.Hewasreadtoasachild,senttogoodschools,andgiveneveryopportunitytobestimulated

intellectually.Thisenvironmentaldifferencecontinueduntilthetwinswereintheirlateteens,whentheywere

giventeststomeasuretheirintelligence.Mark'sI.Q.was125,twenty-fivepointshigherthantheaverageand

fullyfortypointshigherthanhisidenticalbrother.Givenequalopportunities,thetwins,havingidenticalbrains,

wouldhavetestedatroughlythesamelevel.

11.Thisselectioncanbestbetitled____________.

A.MeasuringYourIntelligence

B.IntelligenceandEnvironment

C.TheCaseofPeterandMark

D.HowtheBrainInfluencesIntelligence

12.Thebeststatementofthemainideaofthispassageisthat_______.

A.humanbrainsdifferconsiderably

B.thebrainapersonisbornwithisimportantindetermininghisintelligence

C.environmentiscrucialindeterminingaperson'sintelligence

D.personshavingidenticalbrainswillhaveroughlythesameintelligence

13.Accordingtothepassage,theaverageI.Q.is_______.

A.85.B.100C.110D.125

14.Thecasehistoryofthetwinsappearstosupporttheconclusionthat_______.

A.individualswithidenticalbrainsseldomtestatthesamelevelB.anindividual'sintelligenceisdeterminedonlybyhisenvironment

C.lackofopportunityblocksthegrowthofintelligence

D.changesofenvironmentproducechangesinthestructureofthebrain

15.Thispassagesuggeststhatanindividual'sI.Q._______.

A.canbepredictedatbirth

B.staysthesamethroughouthislife

C.canbeincreasedbyeducation

D.isdeterminedbyhischildhood

You____thatlettertoJames.However,youdidn't.

A、oughttowrite
B、oughttohavewritten
C、shouldwrite
D、shouldbewriting
热门试题 更多>
相关题库更多>
系统集成项目管理工程师
信息安全工程师
信息系统管理工程师
网络工程师
试卷库
试题库