已知单位反馈系统的开环传递函数为(G_p(s)=frac{2}{s(1+0.25s)(1+0.1s)})要求设计串联校正装置，使校正后系统的相位裕量(gamma≥40°)，增益裕量(K_g≥12dB)，静态速度误差系数为(K_v≥4s^{-1})。现设计滞后校正装置(G_c(s)=frac{2(1+4.11s)}{1+6.757s})是否可以满足系统要求？

判断如下闭环特征方程(varphi_{rmc}(z)=z^3+frac{2}{3}z^2-frac{1}{4}z-frac{1}{6})的根是否在单位圆内。

Passage1.6.Whydomostpeopletellmuchthesamewhitelies?

2018年甲公司向乙公司销售安全设备10台，每台市场售价为2万元，成本为1.8万元/台，该安全设备符合国家产业政策，根据规定企业以1.6万元/台的价格出售给消费者，政府予以补助0.4万元/台，该项交易具有商业实质，不考虑其他因素的影响，则甲公司下列会计处理正确的是（）。

某施工组织为加快成倍节拍流水，施工段数为6，A、B、C三个施工过程流水节拍分别为1天、2天、3天。其流水工期为（）天

水资源数量评价是指对评价区内的（）、（）、（）进行估算和评价。

2.“子谓《韶》，尽美矣，又尽善也。谓《武》，尽美矣，未尽善也。”出自以下哪部经典？

10、应用程序的main方法中有以下语句，则输出的结果是()。intb[][]={{1},{2,2},{2,2,2}};intsum=0;for(inti=0;i<b.length;i++){for(intj=0;j<b[i].length;j++){sum+=b[i][j];}}System.out.println("sum="+sum);

给出下面代码：　　1:classParent{　　2:privateStringname;　　3:publicParent(){}　　4:}　　5:publicclassChildextendsParent{　　6:privateStringdepartment;　　7:publicChild(){}　　8:publicStringgetValue(){returnname;}　　9:publicstaticvoidmain(Stringarg[]){　　10:Parentp=newParent();　　11:}　　12:}　　那些行将引起错误？()

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

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?

以下代码的输出结果是（）。foriinrange(1,6):ifi%4==0:breakelse:print(i,end=’,’)

类Test1定义如下：1.publicclassTest1{2．publicfloataMethod(floata,floatb){}3．4．}将以下哪种方法插入行3是不合法的。（）

对于下列代码：　　1:classPerson{　　2:publicvoidprintValue(inti,intj){//...}　　3}:publicvoidprintValue(inti){//...}　　4:}　　5:publicclassTeacherextendsPerson{　　6:publicvoidprintValue(){//...}　　7:publicvoidprintValue(inti){//...}　　8:publicstaticvoidmain(Stringargs[]){　　9:Persont=newTeacher();　　10:t.printValue(10);　　11:}　　第10行语句将调用哪行语句？()

当a=1、b=2、c=5、d=5时，执行下面的程序后，x的值是()。if(a<b)if(c<d)x=1;elseif(a<c)if(b<d)x=2;elsex=3;elsex=6;elsex=7;