已选分类
管理学工商管理
单选题If a is a positive integer, and if the units' digit of a2 is 9 and the units' digit of (a+1)2 is 4, what is the units' digit of (a+2)2? (A) 1 (B) 3 (C) 5 (D) 7 (E) 9
单选题Behind the hope that computers can replace teachers is the idea that the student"s understanding of the subject being taught consists in knowing facts and rules, the job of a teacher being to make the facts and rules explicit and convey them to the student, either by practice drills or by coaching. If that were indeed the way the mind works, the teacher could transfer facts and roles to the computer, which would replace the teacher as drillmaster and coach. But since understanding does not consist merely of knowing facts and rules, but of the grasp of the general concepts underlying them, the hope that the computer will eventually replace the teacher is fundamentally misguided.
Which one of the following, if true, would most seriously undermine the author"s conclusion that computers will not eventually be able to replace teachers?
单选题President of the United States: I have received over 2,000 letters on this issue, and the vast majority of them support my current position. These letters prove that most of the people in the country agree with me.
Which of the following, if true, most weakens the President"s conclusion?
单选题Asumof$200,000fromacertainestatewasdividedamongaspouseandthreechildren.Howmuchoftheestatedidtheyoungestchildreceive?(1)Thespousereceivedofthesumfromtheestate,andtileoldestchildreceivedoftheremainder.(2)Eachofthetwoyoungerchildrenreceived$12.500morethantheoldestchildand$62,500lessthanthespouse.(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A merchant paid $300 for a shipment of x identical calculators. The merchant used 2 of the calculators as demonstrators and sold each of the others for $5 more than the average (arithmetic mean) cost of the X calculators. If the total revenue from the sale of the calculators was $120 more than the cost of the shipment, how many calculators were in the shipment? (A) 24 (B) 25 (C) 26 (D) 28 (E) 30
单选题某投资方案初始投资为 20 万元，前 4 年的现金净流入量分别为：3 万元、7 万元、8 万元、10 万 元，则该投资方案的回收期为：
单选题MonthAveragePriceperDozenApril$1.26May$1.20June$1.08Thetableaboveshowstheaverage(arithmeticmean)priceperdozenofthelargegradeAeggssoldinacertainstoreduringthreesuccessivemonths．IfasmanydozenweresoldinAprilasinMay,andtwiceasmanyweresoldinJuneasinApril,whatwastheaveragepriceperdozenoftheeggssoldoverthethree-monthperiod?
单选题Inthefigureabove,QRSisastraightlineand1ineTRbisects∠PRS.IsittruethatlinesTRandPQareparallel?(1)PQ=PR(2)QR=PR
单选题企业生产经营活动可以分为：
单选题普及率作为企业产出市场需求预测指标统计的对象是( )。 A．农副产品 B．耐用消费品 C．电子商品
单选题了解某地区工业企业职工情况，下面属统计指标的是( )。 A．该地区所有职工的工资水平 B．该地区工业企业职工的文化程度 C．该地区工业企业职工的工资总额 D．该地区职工所从事l自勺工种
单选题Adecoratorboughtaboltofdefectivecloththathejudgedtobeusable,inwhicheasethecostwouldbe$0.80perusableyard.Ifitwaslaterfoundthatonlyoftheboltcouldbeused,whatwastheactualcostperusableyard?(A)$0.60(B)$0.90(C)$1.00(D)$1.20(E)$1.70
单选题All of the following have the same number of distinct prime factors EXCEPT (A) 20 (B) 21 (C) 24 (D) 30 (E) 45
单选题How many positive integers k are there such that 100k is a factor of (22)(3)(53)? (A) None (B) One (C) TWO (D) Three (E) Four
单选题统计调查主要是对以下( )的搜集。 A．数字资料 B．次级资料 C．文字资料 D．原始资料
单选题S is a set of integers such that i) if a is in S. then -a is in S, and ii) if each of n and b is in S, then ab is in S. Is -4 in S? (1)1 is in S. (2)2 is in S.
单选题In December 1992 Tideville Shopping Mall repaired and improved the lighting in the mall"s parking lots, and in 1993 car thefts and attempted car thefts from those lots decreased by 76 percent from the previous year. Since potential car thieves are generally deterred by good lighting, the decrease can be attributed to these improvements.
Which of the following, if true, most hepls to strengthen the argument above?
单选题
单选题Mannis Corporation"s archival records are stored in an obsolete format that is accessible only by its current computer system; thus they are inaccessible when that system is not functioning properly. In order to avoid the possibility of losing access to their archival records in the case of computer malfunction, Mannis plans to replace its current computer system with a new system that stores records in a format that is accessible to several different systems.
The answer to which of the following questions would be most helpful in evaluating the effectiveness of the plan as a means of retaining access to the archival records?
单选题Isnaninteger?(1)n2isaninteger.(2)isaninteger.