若向量a=（1，0，5，2），b=（3，-2，3，-4），c=（-1，1，t，3）线性相关，那么t的值为？

语句A=[1,2,3;4,5,6;7,8,9]产生的结果是

有集合s={1,2,3}，python3解释器执行dels[2]的结果为()。A3B2C{1，2}DTypeError:'set'objectdoesn'tsupportitemdeletion

python3解释器执行{1,2,'a'}|{2,3,4}的结果为():A{2,3,4}B{1,2,3,4,'a'}C{1,2,3,4}D{2,3,4,'a'}

python3解释器执行，下面的示例代码后，l2的结果是():>>>importcopy>>>l1=[1,2,[3,4]]>>>l2=copy.deepcopy(l1)>>>l1[2]='a'>>>l2A[1,2,['a',4]]B[1,2,'a']C[1,2,[3,4]]D报错

下面代码的输出结果是（）。print(round(0.1+0.2,1)==0.3)ATrueB0C1DFalse

已知列表x=[1,2,3]，那么执行语句x=3之后，变量x的地址不变。A正确B错误

Cross-culturalCommunicationontheTelephoneCheckthatyouunderstandwhathasbeensaid.Repeatthemostimportantinformation,andlookforconfirmation.Askforrepetitionifyouthinkitisnecessary.Remembertoothatdifferentcultureshavedifferentwaysofusinglanguage.Somespeakinaveryliteralwaysoitisalwaysquiteclearwhattheymean.Othersaremoreindirect,usinghints,suggestionsandunderstatement(forexample‘notverygoodresults’=‘absolutelydisastrous’)toputovertheirmessage.NorthAmerica,Scandinavia,GermanyandFranceare‘explicit’countries,whiletheBritishmakingclearexactlywhattheymean.OnereasonforthisseemstobethattheBritishuselanguageinamoreabstractwaythanmostAmericansandcontinentalEuropeans.InBritaintherearealsoconventionsofpolitenessandatendencytoavoidshowingone’struefeelings.ForexampleifaDutchmansaysanideais‘interesting’hemeansthatitisinteresting.IfanEnglishmansaysthatanideais‘interesting’youhavetoworkoutfromthewayhesaysitwhetherhemeansitisagoodideaorabadidea.Meanwhile,forsimilarreasonsJapanese,RussiansandArabs—‘subtle’countries—sometimesseemvagueandrudetotheBritish.Iftheysayanideaisinterestingitmaybeoutofpoliteness.Theoppositeofthisisthatplainspeakerscanseemrudeanddominatingtosubtlespeakers,asAmericanscansoundtotheBritish—ortheBritishtotheJapanese.TheBritishhaveatendencytoengageinsmalltalkatthebeginningandendoftheconversation.Questionsabouttheweather,health,businessingeneralandwhatonehasbeendoingrecentlyareallpartoftelephoning,layafoundationforthetruepurposeofthecall.Attheendofacall,theremaywellbevariousrequests,Nicetalkingtoyou,Sayhellotothefamily(ifyouhavemetthem)andlookingforwardtoseeingyouagainsoon.Asharp,briefstyleoftalkingonthephonemayappearunfriendlytoaBritishpartner.NotallnationalitiesareaskeenonsmalltalkasBritish!Beingawareofthesedifferencescanhelpinunderstandinghelpwithdifferentculturaltraditions.Thedifficultyonthephoneisthatyoucannotseethebodylanguagewhichcanhelpinunderstandingpeople.Choosethebestanswerforthefollowingquestions.1)WhichofthefollowingistrueaboutBritishmakingtelephoneaccordingtothetext?

对于序列numbers=[1,2,3,4,5,6,7,8,9,10]，以下相关操作和对应输出正确的是哪一项?（）

以下程序的输出结果是（）。ls1=[1,2,3,4,5]ls2=[3,4,5,6,7,8]cha1=[]foriinls2:ifinotinls1:cha1.append(i)print(cha1)

下列程序的输出结果是（）。#includestructabc{inta,b,c;};main(){structabcs[2]={{1,2,3},{4,5,6}};intt;t=s[0].a+s[1].b%s[0].c;printf("%d\n",t);}

已知x=[1,2,3,4,5,6,7]，那么x.pop()的结果是？（）

ls=[1,2,3,4,5,6],以下关于循环结构的描述，错误的是（）。

以下程序的输出结果是ls1=[1,2,3,4,5]ls2=[3,4,5,6,7,8]cha1=[]foriinls2:ifinotinls1:cha1.append(i)print(cha1)

下列程序的输出结果是（）。#includestructabc{inta,b,c;};main(){structabcs[2]={{1,2,3},{4,5,6}};intt;t=s[0].a+s[1].b%s[0].c;printf("%d\n",t);}