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如圖所示,相鄰兩車站間距相等,在一條直線上.車在兩站間行駛時平均速度均為v車,每次靠站停頓時間均為t.某同學位...
問題詳情:如圖所示,相鄰兩車站間距相等,在一條直線上.車在兩站間行駛時平均速度均為v車,每次靠站停頓時間均為t.某同學位於車站1與車站2之間離車站2較近的某一位置,當車從車站3開動的同時,他向車站2以平均速度v人奔跑,並恰能趕...
物體做半徑為R的勻速圓周運動,它的向心加速度、角速度、線速度和週期分別為a、ω、v和T.下列關係式不正確的是(...
問題詳情:物體做半徑為R的勻速圓周運動,它的向心加速度、角速度、線速度和週期分別為a、ω、v和T.下列關係式不正確的是(                                              ...
Thesystemhasbeendesignedtogivestudentsquickandeasy    t...
問題詳情:Thesystemhasbeendesignedtogivestudentsquickandeasy    tothedigitalresourcesofthelibrary.A.access   B.passage   C.way  D.approach【回答】A解析:考查名詞的區別。該題的意思是:這個體系被...
已知*M=,N=,則MN=(    )A.     B.{t|t>0}    C.{t|t}   D....
問題詳情:已知*M=,N=,則MN=(    )A.B.{t|t>0}C.{t|t}D.{2,}【回答】B知識點:*與函數的概念題型:選擇題...
Anestimated80percentofAmericanadultsthinkmusiclessons,t...
問題詳情:Anestimated80percentofAmericanadultsthinkmusiclessons,thoughattimesboringandchallengingintheeyesofsomekids,improvechildren’sabilitytolearnortheirperformanceinschool.Theysaythatthesatisfaction...
Studentsshouldinvolvethemselvesincommunityactivities  t...
問題詳情:Studentsshouldinvolvethemselvesincommunityactivities  theycangainexperienceforgrowth.A.who                      B.when                     C.which  ...
 —Ihaven’tworkedtheproblemoutyet.WhatamIsupposedtodo?—T...
問題詳情: —Ihaven’tworkedtheproblemoutyet.WhatamIsupposedtodo?—Tryagain!It’sonlydifficult.A.alot                                 B.abitC.toomuch         ...
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經典語錄有時候人得向命運屈服Sometimesamanhastosurrendertofate...
=(1-t,1-t,t),=(2,t,t),則|-|的最小值是(  )A.         B.       ...
問題詳情:=(1-t,1-t,t),=(2,t,t),則|-|的最小值是(  )A.         B.         C.        D.【回答】C知識點:平面向量題型:選擇題...
物體沿直線運動過程中,位移s與時間t的關係式是s(t)=3t2+t.我們計算在t時刻的附近區間[t,t+Δt]...
問題詳情:物體沿直線運動過程中,位移s與時間t的關係式是s(t)=3t2+t.我們計算在t時刻的附近區間[t,t+Δt]內的平均速度==,當Δt趨近於0時,平均速度趨近於確定的值,即瞬時速度,由此可得到t時刻的瞬時速度為.【回答】6t+1...
  ItisreallysadnewsforGuinnessWorldRecords.TiffanyTwo,t...
問題詳情:  ItisreallysadnewsforGuinnessWorldRecords.TiffanyTwo,theholderofthe61                  (old)catrecord,haspassedawayinhersleepat62                  ageof2...
  Ifpeoplecouldnotaskforeignvisitorspersonalquestions,t...
問題詳情:  Ifpeoplecouldnotaskforeignvisitorspersonalquestions,therewouldbelittletotalkabouttomakethe_______________________________________ofstrangers.A.appointment           B.presentati...
Astudyfindsthatyoungsterswhohaveasisterarehappier.Why?T...
問題詳情:Astudyfindsthatyoungsterswhohaveasisterarehappier.Why?Theusualanswer—thatgirlsandwomenaremorelikelythanboysandmentotalkaboutemotions—issomehowunsatisfying,especiallytoaresearcherlikeofmywork...
如果t>0,那麼a+t與a的大小關係是(  )A.a+t>a      B.a+t<a     C.a+t≥a...
問題詳情:如果t>0,那麼a+t與a的大小關係是(  )A.a+t>a      B.a+t<a     C.a+t≥a    D.不能確定【回答】A;知識點:不等式題型:選擇題...
Youngpeopleareoftenunhappywhentheyarewiththeirparents,T...
問題詳情:Youngpeopleareoftenunhappywhentheyarewiththeirparents,They  1thattheirparentsdon’tunderstandthem,Theyoftenthinktheirparentsaretoostrictwiththem.Parentsoftenfinditdifficulttowintheirchildren’...
已知t>0,若,則t=             .
問題詳情:已知t>0,若,則t=             .【回答】3知識點:高考試題題型:填空題...
設函數f(x)=tx2+2t2x+t-1(x∈R,t>0).(1)求f(x)的最小值h(t);(2)若h(t)...
問題詳情:設函數f(x)=tx2+2t2x+t-1(x∈R,t>0).(1)求f(x)的最小值h(t);(2)若h(t)<-2t+m對t∈(0,2)恆成立,求實數m的取值範圍.【回答】解(1)∵f(x)=t(x+t)2-t3+t-1(x∈R,t>0),∴當x=-t時,f(x)取最小值f(-t)=-t3+t-1,即h(t)=-t3+t-1.(2)令g(t)=h(t)-(-2t+m)=-t3+3t-1...
已知向量=(t+1,1),=(t+2,2),若(+)⊥(-),則t的值為     
問題詳情:已知向量=(t+1,1),=(t+2,2),若(+)⊥(-),則t的值為     【回答】知識點:平面向量題型:填空題...
用T/T造句子,“T/T”造句
Therefore,ifT/Tisnotdefinitelystipulatedinthetransaction,thebuyermakespaymentonlybyM/T.Consideringyourgoodtrackrecordandbearingagoodwishforthefuture,IagreetopaymentbyT/T.WeusuallyacceptpaymentbyL/Cats...
IwasinBeijingthen.OtherwiseI                          t...
問題詳情:IwasinBeijingthen.OtherwiseI                          tohelpyoumovetothenewhouse.A.wouldcome              B.willhavecome           C.wouldhav...
Onlywhenyourealizetheimportanceofforeignlanguages     t...
問題詳情:Onlywhenyourealizetheimportanceofforeignlanguages     themwell.A.youcanlearn  B.canyoulearn  C.youlearned     D.didyoulearn【回答】B知識點:倒裝與省略題型:選擇題...
_____thetwinsenjoyed_______atthepartyyesterday.A.Both;t...
問題詳情:_____thetwinsenjoyed_______atthepartyyesterday.A.Both;them B.Both;themselves  C.Neither;them【回答】C知識點:相似相近詞比較題型:選擇題...
Exactlyhowdochildrenbenefitfromafter­schoolactivities?T...
問題詳情:Exactlyhowdochildrenbenefitfromafter­schoolactivities?Thefollowingarethebenefitsofafter­schoolactivities:※Creativity__16__Obviouschoicesarearts,music,andperformingarts,butotheractivitieslike...
Whenyoulistentopeopletalkorreadsomethingwithoutatitle,t...
問題詳情:Whenyoulistentopeopletalkorreadsomethingwithoutatitle,trytoinvent      title thatsummarizes         mainideas.A.the;a               B.the;the             ...
    Howmanyreallysufferasaresultoflabormarketproblems?T...
問題詳情:    Howmanyreallysufferasaresultoflabormarketproblems?Thisisoneofthemostcriticalyetdebatablesocialpolicyquestions.   Inmanyways,oursocialstatisticsoverstatethedegreeofhardship.Unemploym...
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