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采用( )的轧机刚度最差

A、球面磙子轴承
B、油膜轴承
C、圆锥磙子轴承
D、胶木瓦轴承
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正确答案:

D

答案解析:

暂无解析

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TEXTB

Whatweknowofprenataldevelopmentmakesallthisattemptmadebyamothertomoldthecharacterofherunbornchildbystudyingpoetry,art,ormathematicsduringpregnancyseemutterlyimpossible.Howcould

suchextremelycomplexinfluencespassfromthemothertothechild?Thereisnoconnectionbetweentheirnervoussystems.Eventhebloodvesselsofmotherandchilddonotjoindirectly.Anemotionalshocktothemotherwillaffectherchild,becauseitchangestheactivityofherglandsandsothechemistryherblood.Anychemicalchangeinthemother'sbloodwillaffectthechildforbetterorworse.Butwecannotseehowalooking

formathematicsorpoeticgeniuscanbedissolvedinbloodandproduceasimilarlikingorgeniusinthechild.

Inourdiscussionofinstinctswesawthattherewasreasontobelievethatwhateverweinheritmustbeof

someverysimplesortratherthananycomplicatedorverydefinitekindofbehavior.Itiscertainthatnoone

inheritsaknowledgeofmathematics.Itmaybe,however,thatchildreninheritmoreorlessofarathergeneral

abilitythatwemaycallintelligence.Ifveryintelligentchildrenbecomedeeplyinterestedinmathematics,they

willprobablymakeasuccessofthatstudy.

Asformusicalability,itmaybethatwhatisinheritedisanespeciallysensitiveear,apeculiarstructureofthe

handsorthevocalorgansconnectionsbetweennervesandmusclesthatmakeitcomparativelyeasytolearnthe

movementsamusicianmustexecute,andparticularlyvigorousemotions.Ifthesefactorsareallorganized

aroundmusic,thechildmaybecomeamusician.Thesamefactors,inothercircumstancemightbeorganized

aboutsomeothercenterofinterest.Therichemotionalequipmentmightfindexpressioninpoetry.Thecapable

fingersmightdevelopskillinsurgery.Itisnottheknowledgeofmusicthatisinherited,thennoreventheloveof

it,butacertainbodilystructurethatmakesitcomparativelyeasytoacquiremusicalknowledgeandskill.

Whetherthatabilityshallbedirectedtowardmusicorsomeotherundertakingmaybedecidedentirelybyforces

intheenvironmentinwhichachildgrowsup.

6.Whichofthefollowingstatementsisnottrue?

A.Somemotherstrytoinfluencetheirunbornchildrenbystudyingartandothersubjectsduringtheir

pregnancy.

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C.Thebloodvesselsofmotherandchilddonotjoindirectly.

D.Therearenoconnectionbetweenmother'snervoussystemsandherunbornchild's.

7.Amotherwillaffectherunbornbabyontheconditionthat____.

A.sheisemotionallyshocked

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10.Whichofthefollowingisthebesttitleforthepassage?

A.RoleofInheritance.

B.AnUnbornChild.

C.Functionofinstincts.

D.InheritedTalents.

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