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1、《信息檢索與利用》試題(本科)一、單項(xiàng)選擇題(每題1.5分,共30分)1---.人類社會(huì)的三大資源是(A)(A)物質(zhì)、能源、信息(B)物質(zhì)、人力、資本(C)物質(zhì)、能源、管理(D)信息、管理、人力2.---就信息與物質(zhì)、能量的關(guān)系而言(D)(A)信息是一種物質(zhì)(B)信息是一種物質(zhì),同時(shí)具有一定的能量(C)信息是一種能量(D)信息既非物質(zhì),也非能量3.---信息論的創(chuàng)始人是(D)(A)美國數(shù)學(xué)家哈特萊(B)美國數(shù)學(xué)家維納(C)中國數(shù)學(xué)家華羅庚(D)美國數(shù)學(xué)家香農(nóng)4---.信息資源的本質(zhì)特征是(B)(A)依附性與可傳遞性(B)知識(shí)性與共享性(C)共
2、享性與價(jià)值不定性(D)可傳遞性與共享性8---如果分別以檢索詞a、b、c在某數(shù)據(jù)庫的關(guān)鍵詞字段進(jìn)行檢索都能得到相應(yīng)的檢索結(jié)果,結(jié)果不為0,下面哪個(gè)檢索式表示檢索結(jié)果數(shù)最少(A)(A)aandbandc(B)aandborc(C)aorborc(D)aorbandc校長為學(xué)校學(xué)生道路交通安全工作第一責(zé)任人,負(fù)責(zé)校(園)內(nèi)的道路交通安全管理工作和學(xué)生出行的道路交通安全教育,以及學(xué)生春(秋)游和其他教育教學(xué)活動(dòng)的道路交通安全管理工作centerpinchecksandanchoringtheinnercylinder.AccordingtoWhil
3、ecouplingalignmentshouldkeepoiloutofcavityandlocatetherotoraxisneckraisedarewithintheprescribedlimits,thereshouldbenogaps,Horn,HornandHorn0.05mmfeelergaugesfitinto.Centercoupling,condenserwaterfillingandwater-filledaccordingtofactoryrequirement.Forcouplingthreesupportedroto
4、rCenter,themouthunderthecouplingbetweenthevalueshouldbeasstipulatedinthemanufacturer,usually0.15~0.25mm.Inthecaseofcouplingconnection,ifpossible,liftingonlyonebearingendofthesupportbearingoftherotor,removethebearing,fittedwithspecialtilesandspecialliftingtools,discrotors,ch
5、eckthejournalfluttertile,shouldgenerallybelessthan0.10MM.Whenthecouplingsandrotorcomeswhenthereisaconflict,thecouplingCentreshallprevail.6.4.5.2.2shaftlookingfor:...6.4.5.3.Provisionalboltconfirmedthepositioningoftherotorsize,aswellasthecouplingbetweentheadjustmentshimthick
6、nessaccuracy,drawingstomeetthetechnicalrequirements.Plane,cylindricalandcleanthecouplingboltholesshouldbecleanandwithoutburrs,scrapironandgrease-free,relativepositionofthecouplingaccordingtothedrawingrequirementsare.Couplingtopscrews,rounddistanceapart,indicatorstomonitormo
7、vementoftheaircraft,itsvalueisallowedtopassthevalueaxismoving,mountedadjustmentpads,notepadsinstallationdirectionguidepincouplingwithprocessendclosed.Thebackwheelsslowlytightened,when2mmorso,withstandardwhitebarswheretwobackwheelboltholemeasurementaboveandbelow,confirmtwoba
8、ckwheelboltholeconcentricity.Then,thesymmetricalhorizontalmounttwotemporaryboltsti