T.的知识精选

如图所示,相邻两车站间距相等,在一条直线上.车在两站间行驶时平均速度均为v车,每次靠站停顿时间均为t.某同学位...
问题详情:如图所示,相邻两车站间距相等,在一条直线上.车在两站间行驶时平均速度均为v车,每次靠站停顿时间均为t.某同学位于车站1与车站2之间离车站2较近的某一位置,当车从车站3开动的同时,他向车站2以平均速度v人奔跑,并恰能赶...
物体做半径为R的匀速圆周运动,它的向心加速度、角速度、线速度和周期分别为a、ω、v和T.下列关系式不正确的是(...
问题详情:物体做半径为R的匀速圆周运动,它的向心加速度、角速度、线速度和周期分别为a、ω、v和T.下列关系式不正确的是(                                              ...
Astudyfindsthatyoungsterswhohaveasisterarehappier.Why?T...
问题详情:Astudyfindsthatyoungsterswhohaveasisterarehappier.Why?Theusualanswer—thatgirlsandwomenaremorelikelythanboysandmentotalkaboutemotions—issomehowunsatisfying,especiallytoaresearcherlikeofmywork...
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经典语录有时候人得向命运屈服Sometimesamanhastosurrendertofate...
如果t>0,那么a+t与a的大小关系是(  )A.a+t>a      B.a+t<a     C.a+t≥a...
问题详情:如果t>0,那么a+t与a的大小关系是(  )A.a+t>a      B.a+t<a     C.a+t≥a    D.不能确定【回答】A;知识点:不等式题型:选择题...
=(1-t,1-t,t),=(2,t,t),则|-|的最小值是(  )A.         B.       ...
问题详情:=(1-t,1-t,t),=(2,t,t),则|-|的最小值是(  )A.         B.         C.        D.【回答】C知识点:平面向量题型:选择题...
 —Ihaven’tworkedtheproblemoutyet.WhatamIsupposedtodo?—T...
问题详情: —Ihaven’tworkedtheproblemoutyet.WhatamIsupposedtodo?—Tryagain!It’sonlydifficult.A.alot                                 B.abitC.toomuch         ...
Exactlyhowdochildrenbenefitfromafter­schoolactivities?T...
问题详情:Exactlyhowdochildrenbenefitfromafter­schoolactivities?Thefollowingarethebenefitsofafter­schoolactivities:※Creativity__16__Obviouschoicesarearts,music,andperformingarts,butotheractivitieslike...
Studentsshouldinvolvethemselvesincommunityactivities  t...
问题详情:Studentsshouldinvolvethemselvesincommunityactivities  theycangainexperienceforgrowth.A.who                      B.when                     C.which  ...
已知向量=(t+1,1),=(t+2,2),若(+)⊥(-),则t的值为     
问题详情:已知向量=(t+1,1),=(t+2,2),若(+)⊥(-),则t的值为     【回答】知识点:平面向量题型:填空题...
Thesystemhasbeendesignedtogivestudentsquickandeasy    t...
问题详情:Thesystemhasbeendesignedtogivestudentsquickandeasy    tothedigitalresourcesofthelibrary.A.access   B.passage   C.way  D.approach【回答】A解析:考查名词的区别。该题的意思是:这个体系被...
物体沿直线运动过程中,位移s与时间t的关系式是s(t)=3t2+t.我们计算在t时刻的附近区间[t,t+Δt]...
问题详情:物体沿直线运动过程中,位移s与时间t的关系式是s(t)=3t2+t.我们计算在t时刻的附近区间[t,t+Δt]内的平均速度==,当Δt趋近于0时,平均速度趋近于确定的值,即瞬时速度,由此可得到t时刻的瞬时速度为.【回答】6t+1...
Onlywhenyourealizetheimportanceofforeignlanguages     t...
问题详情:Onlywhenyourealizetheimportanceofforeignlanguages     themwell.A.youcanlearn  B.canyoulearn  C.youlearned     D.didyoulearn【回答】B知识点:倒装与省略题型:选择题...
Youngpeopleareoftenunhappywhentheyarewiththeirparents,T...
问题详情:Youngpeopleareoftenunhappywhentheyarewiththeirparents,They  1thattheirparentsdon’tunderstandthem,Theyoftenthinktheirparentsaretoostrictwiththem.Parentsoftenfinditdifficulttowintheirchildren’...
“T/T”可以造什么句,T/T造句
Therefore,ifT/Tisnotdefinitelystipulatedinthetransaction,thebuyermakespaymentonlybyM/T.Consideringyourgoodtrackrecordandbearingagoodwishforthefuture,IagreetopaymentbyT/T.WeusuallyacceptpaymentbyL/Cats...
已知*M=,N=,则MN=(    )A.     B.{t|t>0}    C.{t|t}   D....
问题详情:已知*M=,N=,则MN=(    )A.B.{t|t>0}C.{t|t}D.{2,}【回答】B知识点:*与函数的概念题型:选择题...
  ItisreallysadnewsforGuinnessWorldRecords.TiffanyTwo,t...
问题详情:  ItisreallysadnewsforGuinnessWorldRecords.TiffanyTwo,theholderofthe61                  (old)catrecord,haspassedawayinhersleepat62                  ageof2...
  Ifpeoplecouldnotaskforeignvisitorspersonalquestions,t...
问题详情:  Ifpeoplecouldnotaskforeignvisitorspersonalquestions,therewouldbelittletotalkabouttomakethe_______________________________________ofstrangers.A.appointment           B.presentati...
    Howmanyreallysufferasaresultoflabormarketproblems?T...
问题详情:    Howmanyreallysufferasaresultoflabormarketproblems?Thisisoneofthemostcriticalyetdebatablesocialpolicyquestions.   Inmanyways,oursocialstatisticsoverstatethedegreeofhardship.Unemploym...
Whenyoulistentopeopletalkorreadsomethingwithoutatitle,t...
问题详情:Whenyoulistentopeopletalkorreadsomethingwithoutatitle,trytoinvent      title thatsummarizes         mainideas.A.the;a               B.the;the             ...
设函数f(x)=tx2+2t2x+t-1(x∈R,t>0).(1)求f(x)的最小值h(t);(2)若h(t)...
问题详情:设函数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对t∈(0,2)恒成立,求实数m的取值范围.【回答】解(1)∵f(x)=t(x+t)2-t3+t-1(x∈R,t>0),∴当x=-t时,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t>0,若,则t=             .
问题详情:已知t>0,若,则t=             .【回答】3知识点:高考试题题型:填空题...
Anestimated80percentofAmericanadultsthinkmusiclessons,t...
问题详情:Anestimated80percentofAmericanadultsthinkmusiclessons,thoughattimesboringandchallengingintheeyesofsomekids,improvechildren’sabilitytolearnortheirperformanceinschool.Theysaythatthesatisfaction...
IwasinBeijingthen.OtherwiseI                          t...
问题详情:IwasinBeijingthen.OtherwiseI                          tohelpyoumovetothenewhouse.A.wouldcome              B.willhavecome           C.wouldhav...
_____thetwinsenjoyed_______atthepartyyesterday.A.Both;t...
问题详情:_____thetwinsenjoyed_______atthepartyyesterday.A.Both;them B.Both;themselves  C.Neither;them【回答】C知识点:相似相近词比较题型:选择题...
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