问题详情: 读经纬网地图,完成1﹣3题.1.*地的经纬度是()A.40°E,20°SB.20°E,40°SC.40°W,20°ND.20°W,40°N2.图中,*点位于乙点的()A.正北方向 B.东南方向 C.正南方向 D.西南方向3.*、乙、*、丁四地,下列说法正确的是()A.*位于东半球、南半球、高纬度地区B.乙位于东半...
2019-02-06 18673
问题详情:下列物质不属于配位化合物的是()A.CuSO4·5H2O B.[Fe(SCN)2]Cl2C.NH2Cl D.[Ag(NH3)2]OH【回答】C[配位化合物为过渡元素的原子提供空轨道,其他粒子提供孤对电子形成的化合物,但C选项中无...
2023-02-25 20483
问题详情:阅读填词LunchisanimportantmealforgrowingstudentstheUS,schoolsa1 thecountryarechangingtheirmenustoserveh2 food,butmostschoolsgivestudentslittletimetoeat.AnewsurveybytheSchoolNutritionAssociationoftheUSs3 primaryschoolstudents haveabout...
2021-04-29 30996
问题详情:—HowoldisUncleLi?— 40. A.It’s B.He’s C.She’s D.His【回答】B知识点:人称代词题型:选择题...
2020-06-15 22474
问题详情:如图,已知点B在以AC为直径的圆上,SA⊥面ABC,AE⊥SB于E,AF⊥SC于F.(I)*:SC⊥EF;(II)若求三棱锥S—AEF的体积. 【回答】解:(I) (II)中,又由(I)知得由(I)知知识点:点直线平面之间的位置题型:解答题...
2021-06-02 30735
问题详情:____________tothinkcriticallyisanimportantskilltoday'schildrenwillneedforthefuture.A.Learn B.Learned C.Learning D.Havinglearned【回答】 C 知识点:非谓语动词题型:选择题...
2019-08-09 13775
问题详情:样本方差的计算式S2=[(x1-40)2+(x2-40)]2+。。。+(xn-40)2]中,数字20和40分别表示样本中的 ( )A、样本中数据的个数、平均数 B、方差、标准差C、众数...
2019-10-15 13008
问题详情:如图,在三棱锥S-ABC中,SC⊥平面ABC,点P、M分别是SC和SB的中点,设PM=AC=1,∠ACB=90°,直线AM与直线SC所成的角为60°.(1)求*:平面MAP⊥平面SAC;(2)求二面角M-AC-B的平面角的正切值. 【回答】(1)*∵SC⊥平面ABC,∴SC⊥BC,又∵∠ACB=90...
2020-11-04 22073
问题详情: handwritinglooksthebestinyourclass?A)Who B)Who'sC)WhoseD)Whom【回答】C知识点:物主代词题型:选择题...
2020-08-14 24681
问题详情:乙数为a,若*数比乙数小40%,则*数为()A.a-40% B.40%a C.(1-40%)a D.(1+40%)a【回答】C知识点:从算式到方程题型:选择题...
2021-02-28 19206
问题详情:MYRTLEBEACH,SC(WMBF)StudentsatHorryGeorgetownTechnicalCollegearedoingmock(模拟)interviewstogetthemreadyfortherealworld.Theyarelearningaboutbodylanguage,aswellaswhattosay,whenitcomestofindingajob.Jobtrainerssaidwhenapersonwalksthroughthedoorfo...
2020-04-07 16960
问题详情:阅读理解Onemorningmothercamefromheroffice,shelookedatTom'scoatandsaid:“Lookatyourcoat,Tom.It'stoodirty.Youmustcleanitnow.”“Oh,mother,butIcleanitonlyyesterday,”saidtheboy.“It'sdirtynow.Youmustcleanitagain.”answeredhismother.“No,Idon...
2020-07-17 29687
问题详情: (40.)_______Youprobablythinkyouwillneverbeatopstudent.Thisisnotnecessarilyso.however.Anyonecanbecomeabetterstudentifheorshewantsto.Here,show: Planyourtimecarefully.Whenplanningyourwork,youshouldmakealistofthingsthatyouhavet...
2020-09-06 14552
问题详情:如图,三棱锥S-ABC中,棱SA,SB,SC两两垂直,且SA=SB=SC,则二面角A-BC-S大小的正切值为()A.1B.C.D.2【回答】 C 知识点:点直线平面之间的位置题型:选择题...
2019-02-03 15133
问题详情:如图4117,若∠1=40°,∠2=40°,∠3=116°30′,则∠4=________. 【回答】63°30′知识点:平行线及其判定题型:填空题...
2021-03-18 13256
问题详情:Ioftengotothebookstore QuanchengRoadalthoughit'scrowded.A.onB.forC.from D.between【回答】A知识点:介词和介词短语题型:选择题...
2020-05-11 16930
问题详情: SchoolProgramsHillbrook School Emerson SchoolMusicProgramisofferedall SportsProg...
2021-11-02 18554
问题详情:--Isairthelightestthingintheworld? --Not .ScientistsfromZhejiangUniversityhavejustdevelopedtheworld’slightestmaterial. A.now B.yet C.then D.again【回答】A知识点:副词题型:选择题...
2021-09-13 9939
SCiswideningitshorizonanddeepeningitsmeaning.ThehistoryofSCcanbedividedintothreephases:PopularizationofScience(PS),PublicUnderstandingofScience(PUS),ScienceCommunication(SC).ThecharacteristicofSCnoisemanifeststhedynamicresponsesoftypicalSCspectralstr...
2018-07-12 10423
问题详情:-40-(-19)+(-24) 【回答】-45 知识点:有理数的加减法题型:计算题...
2019-08-12 14456
问题详情: A thief who dropped a winning lottery ticket at the scene of his crime has been given a lesson in honesty. His victim, who picked up the ticket, then claimed the $25,000 prize, managed to trace him, and...
2021-04-10 23555
全*大整编后,3纵改编为第四野战*40*。以雷州半岛的顶端为界,左侧为东路43*两个团,右侧为西路40*6个团,近400只战船在海面上矗起一片片帆桅的森林,顺风顺流,浩荡南下。...
2017-03-22 31740
问题详情:—Theyardissocleantodayandeverythinglooksfine.—Yes.It,sclearthatsomeone it. A.cleans B.cleaned C.hascleanedD.wascleaning【回答】C知识点:动词时态题型:选择题...
2021-11-08 7170
问题详情:以下估测与实际情况相符的是()A.人体感觉舒适的环境温度约为40℃B.人正常步行的速度约为5m/sC.中学生脉搏跳动一次的时间约为3sD.一只普通鸡蛋的质量约为50g【回答】解:A、人感觉舒适的环境温度在20℃左右,40℃会感觉很热,不适应; B、人正常步行的速度约为1.1m/s,5m/s...
2020-06-30 6582
问题详情:以下估测与实际情况相符的是A.人体感觉舒适的环境温度约为40℃ B.人正常步行的速度约为5m/sC.中学生脉搏跳动一次的时间约为3s D.一支新铅笔的长度约为17cm【回答】D知识点:八年级上题型:选择题...
2020-10-09 15966