- 问题详情:完形填空 Thisisa 1ofJim’sfamily.Thisman(人)2 MrGreen.3isJim’sfather.4 woman(女人)isMrsGreen.5isJim’smother.Who6thisboyand7 girl?The8isJim,MrGreen’sson(儿子).The 9 isKate.MrGreen’sdaughter(女儿).Kateis10sister.JimandKatearebrotherandsister...
- 23710
- 问题详情:已知i为虚数单位,则=(A)1+3i (B)1-3i (C) 3-i (D)3+i【回答】A 知识点:数系的扩充与复数的引入题型:选择题...
- 23935
- 问题详情:复数z=(2+i)(1+i)的共轭复数为 (A)3-3i (B)3+3i (C)1+3i (D)1-3i【回答】D知识点:数系的扩充与复数的引入题型:选择题...
- 17238
- 问题详情:设复数z满足z(2+3i)=6-4i,则z的模为.【回答】2【解析】由题知|z||2+3i|=|6-4i|,所以|z|×=,所以|z|=2.知识点:数系的扩充与复数的引入题型:填空题...
- 30430
- 问题详情:方程+6x+13=0的一个根是( )A-3+2i B 3+2i C -2+3i D 2+3i 【回答】A知识点:数系的扩充与复数的引入题型:选择题...
- 31054
- 问题详情:复数z=(3-2i)i的共轭复数等于()A.-2-3i B.-2+3iC.2-3i D.2+3i【回答】C知识点:数系的扩充与复数的引入题型:选择题...
- 25607
- 问题详情:复数3i-1的共轭复数是 【回答】-3i-1知识点:数系的扩充与复数的引入题型:填空题...
- 9331
- 3icalltotheLord,whoisworthyofpraise,andIamsavedfrommyenemies.Itpossessescharacteristicsof3f,3iand3swhicharereflectedinthedevelopmentofCNCmachinetools.它具有3f,3i和3s的特征,并反映在数控机床的技术发展中。When3i,theUKprivateequityfirm,cold-calledLittleSh...
- 20176
- 问题详情:复数(3+2i)i等于()A.-2-3i B.-2+3iC.2-3i D.2+3i【回答】B知识点:数系的扩充与复数的引入题型:选择题...
- 16616
- 问题详情:Thepostmanshouted,“MrGreen,hereisaletter________you.”A.to B.from C.for D.of【回答】C知识点:介词和介词短语题型:选择题...
- 22438
- 问题详情:设z=,则z的共轭复数为()A.-1+3i B.-1-3i C.1+3i D.1-3i【回答】 D知识点:数系的扩充与复数的引入题型:选择题...
- 6341
- 问题详情:—MrGreen,thereissomeoneatthefrontdesk______wouldliketospeakwithyou.—OK,I’mcoming.A./ B.who C.which D.whom【回答】B知识点:定语从句题型:选择题...
- 9319
- 问题详情:设复数z满足(z-2i)(2-i)=5,则z=()A.2+3i B.2-3i C.3+2i D.3-2i【回答】A知识点:数系的扩充与复数的引入题型:选择题...
- 9693
- 问题详情:已知复数z=1﹣i(i为虚数单位),则的共轭复数是()A.1﹣3i B.1+3i C.﹣1+3i D.﹣1﹣3i【回答】A【考点】复数代数形式的乘除运算.【分析】把z代入,然后利用复数代数形式的乘除运算化简得*.【解答】解:∵z=1﹣i,∴=,∴的共轭复数为1﹣3i.知识点:数系的扩充与复数的引入题型:选择...
- 26490
- 问题详情:阅读理解根据MrGreen商店里的价目表,选择正确*。MrGreen'sClothesStoreClothesColorPriceSockswhite,blue$4Trousersblack,red$11Sweaterred,white$8T-shirtgreen,black$7Hatblack,red$6( )1.Whichisthecheapest(最便宜的)? A.Hat. B...
- 11528
- 问题详情:以3i-的虚部为实部,以3i2+i的实部为虚部的复数是()A.3-3i B.3+iC.-+i D.+i【回答】A[3i-的虚部为3,3i2+i=-3+i的实部为-3,故选A.]知识点:数系的扩充与复数的引入题型:选择题...
- 24188
- 问题详情:定义运算=ad-bc,则符合条件=4+2i的复数z为()A.3-i B.1+3i C.3+i D.1-3i【回答】A由知识点:数系的扩充与复数的引入题型:选择题...
- 25080
- 问题详情:已知复数(i是虚数单位),则的共轭复数是A.1-3i B.1+3i C.-1+3i D.-1-3i【回答】A知识点:数系的扩充与复数的引入题型:选择题...
- 8781
- 问题详情:复数设i为虚数单位,则=()A.-2-3i B.-2+3i C.2-3i D.2+3i【回答】C知识点:数系的扩充与复数的引入题型:选择题...
- 8020
- 问题详情:–MrGreen, canwedotoprotectourselveswhenfacingdangerousattackersinpublicplaces?–Alwaysremember“run,hideandfight”whenyouareindanger.A B.how C.where D.which【回答】A【解析】试题分...
- 5199
- 问题详情:设复数z=2+i,则复数z(1﹣z)的共轭复数为()A.﹣1﹣3i B.﹣1+3i C.1+3i D.1﹣3i【回答】B【考点】复数代数形式的乘除运算.【分析】把z=2+i代入z(1﹣z),利用复数代数形式的乘除运算化简,然后求得复数z(1﹣z)的共轭复数.【解答】解:∵z=2+i,∴z(1﹣z)=(2+i)(﹣1﹣i)=﹣1﹣3i,∴复数z(1﹣z)的共轭复数为﹣1+3i....
- 14419
- 问题详情:已知=2+i,则复数z=( ) (A)-1+3i (B)1-3i (C)3+i (D)3-i【回答】解: 故选B。知识点:数系的扩充与复数的引入题型:选择题...
- 31078
- 问题详情:复数z满足zi=4+3i(i是虚数单位),则|z|=________.【回答】 5知识点:数系的扩充与复数的引入题型:填空题...
- 21388
- 问题详情:——MrGreen,doyouknow_______? ——July10,Itwilllastamonth.oursummercampbegins doesoursummercampbegineoursummercampbegins edoesoursummercampbegin【回答】A知识点:宾语从句题型:选择题...
- 22199
- 问题详情: 设i是虚数单位,则复数(A)3+3i (B)-1+3i (3)3+i (D)-1+i【回答】C【解析】知识点:高考试题题型:选择题...
- 11214