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发表于:2020-08-11
问题详情:已知实数x,y满足,则以x,y的值为两边长的等腰三角形的周长是()A.20或16 B.20C.16 D.以上*均不对【回答】B【考点】等腰三角形的*质;非负数的*质:绝对值;非负数的*质:算术平方...
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发表于:2021-05-26
问题详情:已知实数x,y满足,则以x,y的值为两边长的等腰三角形的周长是()A.20或16 B.20C.16 D.以上*均不对【回答】B【考点】等腰三角形的*质;非负数的*质:绝对值;非负数的*质:算术平方根;三...
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发表于:2021-04-28
问题详情:的电阻两端电压值为6V,则在10min内通过导体横截面的电量为( )A.10C B.20C C.300C D.600C【回答】C知识点:欧姆定律单元测试题型:选择题...
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发表于:2021-07-28
问题详情:将方程﹣=2进行变形,结果正确的是()A.﹣=2 B.﹣=20C.﹣=20 D.5(x+4)﹣2(x﹣3)=2【回答】D.【解答】解:方程﹣=2进行变形得:﹣=2,即5(x+4)﹣2(x﹣3)=2,知识点:解一元一次方程(二)去括号与去分母题型:选择题...
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发表于:2021-05-13
问题详情:下列各等式成立的是()A.4×2=8 B.5×4=20C.4×3=7 D.5×4=20【回答】D【考点】二次根式的乘除法.【分析】根据二次根式乘法法则: •=(a≥0,b≥0),分别计算即可.【解答】解:A、4×2=8×5=4...
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发表于:2020-12-26
问题详情:已知3x3y2与﹣2x3my2是同类项,则4m﹣24的值是()A.20B.﹣20C.28D.﹣28【回答】B考点:同类项. 分析:根据同类项的概念求解.解答:解:∵3x3y2与﹣2x3my2是同类项,∴3m=3,∴m=1,则4m﹣24=4﹣24=﹣20.故选B.点评:本题考...
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发表于:2021-03-23
问题详情:若16x2+mxy+25y2是一个完全平方式,那么m的值是() A.20 B.﹣20C.40 D.±40【回答】考点:完全平方式。专题:常规题型。分析:先根据两平方项确定出这两个数,再根据完全平方公式的乘...
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发表于:2021-08-18
问题详情:排列数=()A.6B.20C.60D.120【回答】C考点:排列及排列数公式.专题:排列组合.分析:直接利用排列数公式求解即可.解答:解:排列数=5×4×3=60.故选:C.点评:本题考查排列数公式的应用,基本知识的考查.知...
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发表于:2020-05-09
问题详情:16.____Homecanbeagreatplaceforchildrentostudy.It’simportanttoprovideaworkspaceoftheirownwheretheycanreadbooksorjustwritealettertotheirfriends.●Location(位置)17....
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发表于:2019-12-16
问题详情:Parentsfeelthatitisdifficulttolivewithteenagers. 16 Accordingtoarecentresearch,themostcommonargumentbetweenparentsandteenagersisthatregardinguntidinessand...
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发表于:2021-07-09
问题详情: 16 Yourschooldaysshouldbesomeofthebestandhappiestdaysofyourlife.Howcanyougainthemostfromthem,andensurethatyoudonotwastethiswonderfulopportunitytolear...
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发表于:2020-11-02
问题详情:下列各等式成立的是( )A.4×2=8 B.5×4=20C.4×3=7 D.5×4=20【回答】D知识点:二次根式的乘除题型:选择题...
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发表于:2019-07-17
问题详情: 16 Safetyinthehighwayisnotsomethingthatistotallyoutofourcontrol.Herearefourwayswecanprotectourselveswhenwetravel. 17 Peopleinsmallcarsareinjuredmoreoft...
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发表于:2021-10-07
问题详情:Catsarethosecutecreaturesthatwelovehavinginourhomes. 16 Ifyoudon’tknowtheadvantagesyet,Icanenlighten(启发)you.Allyougottodoistoreadbelow.Comeon,itisworthyourtime...
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发表于:2019-05-05
问题详情: 16 Ifyouaregrowingtomatoesinyourbackyardforsaleyouareproducingforthemarket.Youmightsellsometoyourneighborandsometothelocalmanagerofthesupermarket.Butineitherca...
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发表于:2021-08-09
问题详情:16Youprobablythinkyouwillneverbeatopstudent.Thisisnotnecessarilyso,however.Anyonecanbecomeabetterstudentifheorshewantsto.Here’show:Planyourtimecarefully.Whenplan...
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发表于:2021-09-22
问题详情: 16 Whatwouldyoubelikeifyouweretotakethecollegeentranceexamtomorrow? 17 Or,worriedanduneasy?“IwassurprisedathowIcouldgetangrysoeasilywithmyparentsbeforea...
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发表于:2021-09-16
问题详情: (16)____Youprobablythinkyouwillneverbeatopstudent.Thisisnotnecessarilyso,however.Anyonecanbecomeabetterstudentifheorshewantsto.Here’show: Planyourtimecarefull...
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发表于:2021-03-06
问题详情:MaketherightchoicesWhatislife’sgreatestgift? 16______Choiceistheabilitytoselectonecourseofactionfromasetofalternativestoachieveagoal.Whatissogreataboutchoice?It...
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发表于:2021-03-06
问题详情:-16÷4×= .【回答】-1知识点:有理数的乘除法题型:填空题...
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发表于:2021-09-11
问题详情:如果等腰三角形两边长是8cm和4cm,那么它的周长是( ) A、20cm B、16cm C、20cm或16cm D、12cm【回答...
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发表于:2020-11-14
问题详情: 16 Scientistsandexpertshaveprovedtheuniquenessoffinger-printsanddiscoveredthatnoexactlysimilarpatternispassedonfromparentstochildren,thoughnobodyknowswhythis...
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发表于:2020-11-28
问题详情:Mostofusleadabusylife. 16_Wethink,“IfIreachedmy goal,thenIwouldbehappy”,or“IfIcouldgetabetterjob,thenIwouldenjoylife.”Butwhynotenjoyliferightnow?Firstly,taketi...
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发表于:2022-08-13
问题详情:阅读程序(如图),若a=45,b=20,c=10,则输出的结果为()A.10B.20C.25D.45【回答】A知识点:框图题型:选择题...
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发表于:2020-08-18
问题详情:16.Thestorytellerwastellingusastoryinavividway____________________ithimself.(asif)这个讲故事的人以一种生动的方式给我们讲了一个故事,好像他亲身经历过一样。17.Anofficia...