已选分类
管理学
单选题If all of the telephone extensions in a certain company must be even numbers, and if each of the extensions uses all four of the digits 1, 2, 3, and 6，what is the greatest number of four—digit extensions that the company can have?
单选题A certain packing crate contains between 50 and 60 books. How many books are there in the packing crate? (1)If the books are counted out by three, there will be one book left over. (2)If the books are counted out by sixes, there will be one book left over.
单选题A thorough search of Edgar Allan Poe"s correspondence has turned up not a single letter in which be mentions his reputed morphine addiction. On the basis of this evidence it is safe to say that Poe"s reputation for having been a morphine addict is undeserved and that reports of his supposed addiction are untrue.
Which of the following is assumed by the argument above?
单选题What is the maximum capacity in cups of a pail that contains only sand and is filled to three fourths of its capacity?
(1)If one cup of sand were added to the pail, it would be filled to seven eighths of its capacity.
(2)If two cups were removed from the pail, it would be filled to one half of its capacity.
单选题如果是右侧检验，计算出的P值为0.0501，若α=0.05，则( )。 A．接受H0:u=u0 B．接受H1:u＞u0 C．接受H1:u＜u0 D．推断理由不充分
单选题在抽样调查中，要提高推断的可靠程度即提高概率度，必须( )。 A．缩小误差范围 B．确定总体指标所在的范围 C．扩大误差范围 D．扩大绝对可靠的范围
单选题加权算术平均数指数要成为综合指数的变形，其权数为( )。 A．Q1P1 B．Q0P0 C．Q0P1 D．前三者均可
单选题某市工业企业2007年生产经营成果年报呈报时间规定在2008年1月31日，则调查期限为( )。 A．一日 B．一个月 C．一年 D．一年零一个月
单选题以等可能性为基础的概率是( )。 A．古典概率 B．统计概率 C．试验概率 D．主观概率
单选题Diana bought a stereo for $530, which was the retail price plus a 6 percent sales tax. How much money could she have saved if she had bought the stereo at the same retail price in a neighboring state where she would have paid a sales tax of 5 percent?
单选题下列有关抽样分布的说法，正确的是 A．抽样分布与总体分布相同 B．大样本的抽样分布服从正态分布 C．小样本的抽样分布不服从正态分布 D．小样本的抽样分布服从正态分布
单选题直角三角形ABC的斜边AB=13厘米，直角边AC=5厘米，把AC对折到AB上去与斜边相重合，点C与点E重合，折痕为AD(如图)，则图中阴影部分的面积为()平方厘米.
单选题AnairlinepassengerisplanningatripthatinvolvesthreeconnectingflightsthatleavefromAirportsA,B,andC,respectively.ThefirstflightleavesAirportAeveryhour，beginningat8:00a.m.,andarrivesatAirportBhourslater.ThesecondflightleavesAirportBevery20minutes,beginningat8:00a.m.,andarrivesatAirportChourslater.ThethirdflightleavesAirportCeveryhour,beginningat8.45a.m.Whatistheleasttotalamountoftimethepassengermustspendbetweenflightsifallflightskeeptotheirschedules?(A)25min(B)1hr5min(C)1hr15min(D)2hr20min(E)3hr40min
单选题Inacertainclassconsistingof36students,someboysandsomegirls,exactlyoftheboysandexactlyofthegirlswalktoschool.Whatisthegreatestpossiblenumberofstudentsinthisclasswhowalktoschool?(A)9(B)10(C)11(D)12(E)13
单选题标志值较大的一组，其权数较大时，则算术平均数( )。 A．接近标志值较小的一组 B．接近标志值较大的一组 C．不受权数影响 D．仅受标志值影响
单选题Holiday receipts—the total sales recorded in the fourth quarter of the year—determine the economic success or failure of many retail businesses. Camco, a retailer selling just one camera model, is an excellent example. Camco"s holiday receipts, on average, account for a third of its yearly total receipts and about half of its yearly profits.
If the statements above are true, which of the following must also be true about Camco on the basis of them?
单选题Which of the following, if true, casts most doubt on the relevance of the survey results described above for drawing conclusions about illegal drug use in the teen-age population as a whole?
单选题Inacertainflowershop,whichstocksfourtypesofflowerthereareasmanyvioletsascarnation，andasmanytulipsasviolets．Ifthereareequalnumbersofrosesandtulips，whatpercentoftheflowersintheshoparecarnations?
单选题在假设检验中，根据显著性水平便可确定接受还是否定原假设的界限。如宁可取伪而不弃真( )。 A．可将α设定大些 B．可将α设定小些
单选题在编制我国物价指数时，一般采用的权数是( )。 A．统计报表资料 B．抽样调查资料 C．零点调查资料 D．典型调查资料
单选题
单选题在假设检验中，若抽样单位数不变，显著性水平从0.01提高到0.1，则犯第二类错误的概率( )。 A．也将提高 B．不变 C．将会下降 D．无法判断
单选题若二阶差分大体相同，则应配合( )。 A．直线方程 B．指数方程 C．抛物线方程 D．对数方程
单选题Theconcentrationofacertainchemicalinafullwatertankdependsonthedepthofthewater.Atadepththatisxfeetbelowthetopofthetank,theconcentrationis3partspermillion，where0＜x＜4.Tothenearest0.1foot,atwhatdepthistheconcentrationequalto6partspermillion?
单选题Acomputergeneratesnon-zeronumbersforthefigureabovesothattheproductofthenumbersalonganyverticalcolumnisequaltotheproductofthenumbersinanyhorizontalrow.Whatnumberdoes8represent?(1)uequals6.(2)tequals2.
单选题用简单随机重复抽样方法选取样本单位，如果要使抽样平均误差降低50/%，则样本容量需要扩大到原来的( )。 A．2倍 B．3倍 C．4倍 D．5倍
单选题若以某市工业企业为总体，则该市工业总产值是( )。 A．总体 B．标志 C．指标 D．变量值
单选题下列指标中，属于相对数的是( )。 A．某企业的工人劳动生产率 B．某种商品的平均价格 C．某地区按人口平均的粮食产量 D．某公司的人均工资
单选题如果一个统计量能把含在样本中有关总体的信息完全提取出来，那么这种统计量称为( )。 A．充分统计量 B．无偏估计量 C．有效统计量 D．一致估计量
单选题按投资与企业生产经营的关系，投资可分为：
单选题Manager: Accounting and Billing are located right next to each other and the two departments do similar kinds of work; yet expenditures for clerical supplies charged to Billing are much higher. Is Billing wasting supplies?
Head of Billing: Not at all.
Which of the following, if true, best supports the position of the Head of Billing?
单选题If r=23·52·7 and s=22·32·5, which of the following is equal to the greatest common divisor of r and s?
单选题
单选题对某地区工业企业职工进行调查，调查对象是( )。 A．各工业企业 B．各工业企业的全体职工 C．一个工业企业 D．每位职工
单选题A rectangle with dimensions 75 inches by 100 inches is divided into 20 smaller rectangles. If each new rectangle has equal dimensions, how many inches of lines are needed to divide the original rectangle? (1)One of the dimensions of each of the rectangles is 15 inches. (2)One of the dimensions of each of the rectangles is 25 inches.
单选题
在市场上，出售国家保护的野生动物或者其产品的，没收违法所得，处以相当于实物价值（ ）的罚款。
A、1倍以上 B、1—5倍 C、1—10倍 D、10倍以下
单选题The total cost for Company X to produce a batch of tools is $10,000 plus $3 per tool. Each tool sells for $8. The gross profit earned from producing and selling these tools is the total income from sales minus the total production cost. If a batch of 20,000 tools is produced and sold, then Company X's gross profit per tool is
单选题Thepositiveintegernisdivisibleby25.Ifisgreaterthan25,whichofthefollowingcouldbethevalueof?(A)22(B)23(C)24(D)25(E)26
单选题某计划单列市2001年末有人口750万人，零售商业网点3万个，则该市的商业网点密度指标是( )。 A．2.5千人/个 B．250人/个 C．0.25个/千人 D．250个/人
单选题On a purchase of $120， a store offered a payment plan consisting of a $20 down payment and 12 monthly payments of $10 each. What percent of the purchase price， to the nearest tenth of a percent, did the customer pay in interest by using this plan? (A) 16.7% (B) 30% (C) 75.8% (D) 106.7% (E)107.5%
单选题Inthediagramabove,pointsA,B,C,D,andErepresentthefiveteamsinacertainleagueinwhicheachteammustplayeachoftheotherteamsexactlyonce.Thesegmentsconnectingpairsofpointsindicatethatthetwocorrespondingteamshavealreadyplayedtheirgame.Thearrowsonthesegmentspointtotheteamsthatlost;thelackofanarrowonasegmentindicatesthatthegameendedinatie.Afterallgameshavebeenplayed,whichofthefollowingcouldNOTbethepercentofgamesplayedthatendedinatie?
单选题If a motorist had driven 1 hour longer on a certain day and at an average rate of 5 miles per hour faster, he would have covered 70 more miles than he actually did. How many more miles would he have covered than he actually did if he had driven 2 hours longer and at an average rate of 10 miles per hour faster on that day? (A) 100 (B) 120 (C) 140 (D) 150 (E) 160
单选题At 9 a.m, a hiker was due south of point P. What direction was point P from her position at noon? (1)From 9 a.m until 11 a.m she walked due east at 2 miles per hour, and from 11 a. m until noon, she walked due north at 3 miles per hour. (2)At noon, she is exactly 4.5 miles from point P.
单选题Technically a given category of insurance policy is underpriced if, over time, claims against it plus expenses associated with it exceed total income from premiums. But premium income can be invested and will then yield returns of its own. Therefore, an underpriced policy does not represent a net loss in every case.
The argument above is based on which of the following assumptions?
单选题
单选题In Bassaria a group of that country"s most senior judges has criticized the uniform mandatory sentences recently introduced for certain specific crimes. The judges argue that such sentences, by depriving them of all discretion in setting sentences, make it impossible for them to consider either aggravating or extenuating circumstances and so make it impossible to achieve true justice — the fitting of the severity of the punishment to the gravity of the particular crime.
Which of the following, if true, provides the strongest evidence for the claim that in Bassaria the newly introduced mandatory sentences are not necessarily a change for the worse with respect to achieving true justice as defined in the argument?
单选题8．“统计”一词的基本涵义是( )。 A．统计调查、统计整理、统计分析 B．统计设计、统计分组、统计计算 C．统计方法、统计分析、统计计算 D．统计学、统计工作、统计资料
单选题If 1＜d＜2, is the tenths" digit of the decimal representation of d equal to 9?
(1)d+0.01＜2
(2)d+0.05＞2
单选题在组距分组时，对于连续性变量，相邻两组的组限( )。 A．必须是重叠的 B．必须是间断的 C．可以是重叠的，也可以是间断的 D．必须取整数
单选题统计分析报告普遍运用的表达方式是( )。 A．深刻描写 B．论证说明 C．叙述、说明、议论 D．记述、批驳、说明
单选题影响抽样误差大小的因素有多个，N很大时，影响最大的是( )。 A．抽样的方法 B．抽样的组织方式 C．抽样单位数 D．抽样比
单选题如果回归标准误差Syx=0，则表明( )。 A．全部观测值和回归值都不相等 B．回归值代表性小 C．全部观测值和回归值的离差之积为零 D．全部观测值都落在回归直线上
单选题 Questions 4—5 are based on the following:
Any person who drops out of high school will be unemployed unless he or she
finds a low-paying job or has relatives with good business connections.
单选题反映企业科技人员创造力的主要指标是( )。 A．工作时间 B．工作强度 C．劳动效率 D．劳动成果总量
单选题Is a+b+C+d equal to 4? (1)a, b, c, and d are each positive. (2)The product abcd equals 1.
单选题Car X and car Y ran a 500-kilometer race, what was the average speed of car X? (1)Car X completed the race in 6 hours and 40 minutes. (2)Car Y, at an average speed of 100 kilometers per hour, completed the race 1 hour and 40 minutes before car X crossed the finish line.
单选题在回归分析中，两个变量( )。 A．都是随机变量 B．都不是随机变量 C．自变量是随机变量 D．因变量是随机变量
单选题Ounce for ounce, blends of different artificial sweeteners match any individual artificial sweetener in sweetening power. When used to sweeten food, blends greatly decrease the likelihood that consumers will exceed acceptable daily intakes for individual sweeteners. Blends should therefore be used, rather than single sweeteners alone, since blends are clearly more healthful, yet equally effective.
The argument above depends on which of the following assumptions?
单选题IfMarksavedanaverage(arithmeticmean)of$80perweekfor3consecutiveweeks,howmuchdidhesavethesecondweek?(1)TheaverageamountthatMarksavedperweekforthefirst2weekswas$60.(2)TheamountthatMarksavedthefirstweekwastheamounthesavedthesecondweekandtheamounthesavedthethirdWeek.(A)条件(1)充分，但条件(2)不充分．(B)条件(2)充分，但条件(1)不充分．(C)条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．(D)条件(1)充分，条件(2)也充分．(E)条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
单选题商品销售额实际增加400元，由于销售量增长使销售额增加120元，由于价格( )。 A．增长使销售额增加20元 B．增长使销售额增长280元 C．降低使销售额减少20元 D．降低使销售额减少280元
单选题Playing eighteenth-century music on the instruments of that period provides valuable information about how the music originally sounded. Eighteenth-century instruments cannot be played without being restored, however, and restoring such an instrument destroys all of the information that researchers could obtain from it about eighteenth-century instrument-making techniques.
If the statements above are true, which of the following must be true on the basis of them?
单选题下列调查中，最适合采用重点调查的是( )。 A．了解全国钢铁生产的基本情况 B．了解全国人口总数 C．了解上海市居民家庭的收支情况 D．了解某校学生的学习情况
单选题How many two-element subsets of 1, 2, 3, 4are there that do not contain the pair of elements 2 and 4? (A) One (B) TWO (C) Four (D) Five (E) Six
单选题PatwillwalkfromintersectionXtointersectionYalongaroutethatisconfinedtothesquaregridoffourstreetsandthreeavenuesshowninthemapabove.HowmanyroutesfromXtoYcanPattakethathavetheminimumpossiblelength?(A)Six(B)Eight(C)Ten(D)Fourteen(E)Sixteen
单选题Which of the following best completes the passage below?
The unemployment rate in the United States fell from 7.5 percent in 1981 to 6.9 percent in 1986. It cannot, however, be properly concluded from these statistics that the number of unemployed in 1986 was lower than it had been in 1981 because______
单选题下列数列中属于动态数列的是( )。 A．学生按学习成绩分组形成的数列 B．工业企业按地区分组形成的数列 C．职工按工资水平高低排列形成的数列 D．出口额按时间先后顺序排列形成的数列
单选题
执法人员当场收缴的罚款，应当自收缴罚款之日起（ ），交至行政机关。
A、当日 B、2日 C、5日 D、7日
单选题技术引进可以提高企业的技术水平，而衡量技术引进成功与否的唯一标志是( )。 A．产量 B．经济效益 C．工资水平 D．市场份额
单选题根据个体价格指数和报告期销售额计算的价格总指数是指( )。 A．综合指数 B．加权算术平均指数 C．加权调和平均指数 D．可变构成指数
单选题您是否在使用本公司生产的产品?此问句是( )。 A．态度问句 B．事实问句 C．原因问句 D．开放式问句
单选题甲班学生平均成绩85分，标准差9.5分，乙班学生平均成绩75分，标准差8.5分，则( )。 A．甲班学生平均成绩代表性好一些 B．乙班学生平均成绩代表性好一些 C．无法比较哪个班学生平均成绩代表性好 D．两个班学生平均成绩代表性一样
单选题If P is a set of integers and 3 is in P, is every positive multiple of 3 in P? (1)If x is in P，then x+3 is in P. (2)If x is in p, then x-3 is in p. (A) 条件(1)充分，但条件(2)不充分． (B) 条件(2)充分，但条件(1)不充分． (C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． (D) 条件(1)充分，条件(2)也充分． (E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
单选题Inthefigureabove,howmanyofthepointsonlinesegmentPQhavecoordinatesthatarebothintegers?
单选题赞成公司采用低股利支付率股利政策的理论是( )。
单选题If n and p are different positive prime numbers, which of the integers n4, p2, and np has (have) exactly 4 positive divisors?
单选题What percent of the employees of Company X are technicians? (1)Exactly 40 percent of the men and 55 percent of the women employed by Company X are technicians. (2)At Company X, the ratio of the number of technicians to the number of nontechnicians is 9 to 11.
单选题下列变量哪个属于连续变量( )。 A．职工人数 B．原煤产量 C．汽车产量 D．居民户数
单选题ThediagramaboveshowsthevariouspathsalongwhichamousecantravelfrompointX,whereitisreleased,topointY,whereitisrewardedwithafoodpellet.HowmanydifferentpathsfromXtoYcanthemousetakeifitgoesdirectlyfromXtoYwithoutretracinganypointalongapath?
单选题ThediagramaboveshowsthevariouspathsalongwhichamousecantravelfrompointX,whereitisreleased,topointY,whereitisrewardedwithafoodpellet.HowmanydifferentpathsfromXtoYcanthemousetakeifitgoesdirectlyfromXtoYwithoutretracinganypointalongapath?(A)6(B)7(C)12(D)14(E)17
单选题How many integers between 324,700 and 458,600 have tens digit 1 and units digit 3? (A) 10,300 (B) 10,030 (C) 1,353 (D) 1,352 (E) 1,339
单选题The wild mouflon sheep of the island of Corsica are direct descendants of sheep that escaped from domestication on the island 8,000 years ago. They therefore provide archaeologists with a picture of what some early domesticated sheep looked like, before the deliberate selective breeding that produced modern domesticated sheep began.
The argument above makes which of the following assumptions?
单选题统计分析报告的编写，其标题要( )。 A．严谨、分明、清晰 B．确切、简明、有吸引力 C．突出、正确、鲜明、集中 D．简短、精悍、形式新
单选题What is the greatest possible length of a positive integer less than 1,000? (A) 10 (B) 9 (C) 8 (D) 7 (E) 6
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单选题5，6，7三个数的几何平均数( )。 A．大于6 B．小于6 C．等于6 D．等于5