问题详情:如图所示,一个电灯泡的实物电路,存在的接线故障是()sA.电源短路B.电灯断路 C.开关短路D.电灯短路i【回答】C.知识点:电流和电路题型:选择题...
2020-03-24 11246
问题详情:Ican'tsaywhichwineisbest—it'sa(n)________ofpersonaltaste.A.affair B.event C.matter D.variety【回答】C知识点:名词题型:选择题...
2020-03-22 26673
问题详情:-Howmuchisthebook? -Fiftyyuan,butthere'sa_______offerifyoubuytwo. A.big B.special C.cheap D.suitable【回答】B知识点:相似相近词比较题型:选择题...
2020-08-12 4100
问题详情:(2018年杭州卷)如图,质量分布均匀的长方体重物A、B,密度分别为ρA和ρB,底面积分别为SA和SB,且SA>SB,将它们放在水平面上,它们对地面的压强相等。现水平割去上半部分(如图中虚线所示),剩余部分对地面的压强分别为pA和pB,对地面的压力分别为FA和FB,下列物理量大小比较的关系正确...
2020-01-03 4406
TheComparisonofSA8000andOHSMS;SelecttheEnablesystemadministrator(SA)usernamecheckbox.CleartheEnablesystemadministrator(SA)usernamecheckbox.First,wehavebuiltEMFprojectsforEAMLandSA.Then,wehaveusedEMFtoimplementbi-directionaltransformationsbetweenEAMLa...
2018-07-10 24955
问题详情:.如图,写出字母所代表的正方形面积,SA=____,SB=____.【回答】625 144知识点:勾股定理题型:填空题...
2019-09-05 6593
问题详情: ---Ihavetogettothepostofficebysixo'clock,butlook,it'salmostsix.---________.Thisclockistwentyminutesfast. A.That'stoobad B.Noproblem C.Sure,youcan D.Takeiteasy【回答】D知识点:交际用语题型:选择题...
2022-04-11 32549
问题详情:ArobotnamedCosmohasbecomesix-year-oldKevinFitzgerald'saidinhisuphilleverydaybattlewithdevelopmentdifficulties. Kevinshowedthefirstsignoflearningdifficultieswhenhewas18monthsold,andwaslaterdiagnosed(诊断)withdevelopmentaldisorder.But...
2021-08-12 18146
问题详情:单项选择。—DoyouoftenwatchManandNatureonTV? —Sometimes.It'saninterestingprogram,butI________SportsNews. A.prefer B.want C.know D.review【回答】A知识点:动词和动词短语题型:选择题...
2020-03-20 26831
问题详情:三棱锥S﹣ABC中,SA⊥底面ABC,若SA=AB=BC=AC=3,则该三棱锥外接球的表面积为()A.18π B. C.21π D.42π【回答】C知识点:球面上的几何题型:选择题...
2019-08-24 20325
问题详情: “YOU’REtoosmall,Ginny,you’llnevermakeanOlympicteam,”saidmyfirst-everrowingcoach,waybackinthelatewinterof1978.Ihadjust41mydream.Itwassuretoobigatthatpointtosomebodywhose42notonlymattered,butwhoseemotionalsupportcouldplayakeyrole.ThenIwas...
2019-05-09 10432
问题详情:Inourclass,there'sa_____thatwhenitissomebody'sbirthday,theybringinacakeforusalltoshare.A.conversation B.tradition C.discussion【回答】B知识点:单词题型:选择题...
2020-08-06 4604
问题详情:A Deed a DayIt was a busy day as usual. I was making sandwiches and balancing the phone between my shoulder and chin. The washing machine sounded as my husband walked in with our daughters. Wehadonlyabouttwe...
2020-12-25 30721
问题详情: “Thechildhasbecomepartofthemanagementoffamilylife,”saysAdeleSchwartz,researchdirectorforStarsforKids,achildren’smarket---researchfirm.“Thisisabigrolechangeinfamilylife.Houseworkischanging.Itusedtobetotakeoutthegarbageandwalkthedog.Thisisa...
2020-10-26 21713
问题详情:—HowfarisitfromBeijingtoHaikou?—It'sa______flightfromBeijingtoHaikou. A.3-hour-long B.3hourslong C.3hours'long【回答】A知识点:构词法题型:选择题...
2021-01-21 23847
问题详情:It'sa________thatI'mtoobusytotakepartintheparty.A.pleasure Blem C.pity D.task【回答】C知识点:名词题型:选择题...
2020-06-17 14522
问题详情:已知三棱锥S-ABC的所有顶点都在球O的球面上,SA⊥平面ABC,SA=2,AB=1,AC=2,∠BAC=60°,则球O的体积为() A.4π B.π C.π D.12π【回答】C知识点:空间中的向量与立体几何题型:选择题...
2020-05-15 19892
问题详情:为研究水杨*(SA)对水稻幼苗抗寒能力的影响,研究者用0.5mmo1/L的SA喷洒水稻幼苗叶片,同时设置对照实验,低温处理1天后测定有关数据(下表)。请回答:总叶绿素含量mg/g胞间C02含量umo1/mo1净光合速率umo1(C02)/(m2·s)对照组1.710408.8901.540实验组2.120288.6702.69...
2021-07-16 18806
问题详情:已知三棱锥S﹣ABC的所有顶点都在球O的球面上,SA⊥平面ABC,AB⊥BC且AB=BC=1,SA=,则球O的表面积是()A.4π B.π C.3π D.π【回答】A【考点】球的体积和表面积.【专题】计算题;空间位置关系与距离;球.【分析】由三棱锥S﹣ABC的所有顶点都在球O的球面上,SA⊥平面ABC,AB⊥...
2021-03-13 24974
问题详情:已知四棱锥S—ABCD,SA⊥平面ABCD,AB⊥BC,∠BCD+∠DAB=π,SA=2,,二面角S—BC—A的大小为.若四面体SACD的四个顶点都在同一球面上,则该球的表面积为A. B.4π C.8π D.16π【回答】C 知识点:点直线平面之间的位置题型:选择题...
2020-06-29 23050
FromtheSAnode,electricalimpulsesspreadthroughtheheartmuscletotriggertheheartbeat.ThisisparticularlyimportantwhentheconductingtissuesbetweentheSAnodeandtheventriclesfailonlyfromtimetotime.An"atriallytriggered"pacemakercanpickupthesignalsdirectlyfrom...
2018-10-31 24386
问题详情:______peopledecidedtobuytheirowncarsearlierbecauseof“SARS” A.Anumber B.Agreatnumberof C.Agreatdealof D.Thenumberof【回答】A知识点:数词量词题型:选择题...
2019-12-31 14721
问题详情:若三棱锥S-ABC的所有顶点都在球O的球面上,SA⊥平面ABC,SA=2,AB =1,AC=2,∠BAC=60°,则球O的表面积为(A)64p (B)16p (C)12p (D)4p【回答】B知识点:空间几何体题型:选择题...
2020-11-04 11770
问题详情:Ittook buildingsuppliestoconstructtheseenergy-savinghouses.Ittookbrains,too.A.otherthan B.morethan C.ratherthan D.lessthan【回答】B知识点:词组短语题型:选择题...
2022-08-18 20093
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