已选分类
管理学
单选题What is the units digit of (13)4(17)2(29)3?
单选题One-fifthofthelightswitchesproducedbyacertainfactoryaredefective.Four-fifthsofthedefectiveswitchesarerejectedandofthenondefectiveswitchesarerejectedbymistake.Ifalltheswitchesnotrejectedaresold,whatpercentoftheswitchessoldbythefactoryaredefective?(A)4%(B)5%(C)6.25%(D)11%(E)16%
单选题One-fifthofthelightswitchesproducedbyacertainfactoryaredefective.Four-fifthsofthedefectiveswitchesarerejectedandofthenondefectiveswitchesarerejectedbymistake.Ifalltheswitchesnotrejectedaresold,whatpercentoftheswitchessoldbythefactoryaredefective?
单选题During a 3-year period, the profits of Company X changed by what percent from the second year to the third year? (1)The increase in profits of Company X from the first year to the second year was the same as the increase from the first year to the third year. (2)For Company X, the profits for the first year were $13,800 and the profits for the third year were $15,900. (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Census data for Prenland show that unmarried Prenlandic men in their thirties outnumber unmarried Prenlandic women in that age group by about ten to one. Most of these men do wish to marry. Clearly, however, unless many of them marry women who are not Prenlandic, all but a minority will remain unmarried.
The argument makes which of the following assumptions?
单选题If 75 percent of a class answered the first question on a certain test correctly, 55 percent answered the second question on the test correctly, and 20 percent answered neither of the questions correctly, what percent answered both correctly? (A) 10% (B) 20% (C) 30% (D) 50% (E) 65%
单选题Intherectangularcoordinatesystemabove,theshadedregionisboundedbystraightlines.WhichofthefollowingisNOTanequationofoneoftheboundarylines?
单选题A 20 percent decline in lobster catches in Maine waters since 1980 can be justifiably blamed on legislation passed in 1972 to protect harbor seals. Maine"s population of harbor seals is now double the level existing before protection was initiated, and these seals are known to eat both fish and lobsters.
Which of the following, if tree, would most seriously weaken the argument above?
单选题Medieval Arabs had manuscripts of many ancient Greek texts, which were translated into Arabic when there was a demand for them. Medieval Arab philosophers were very interested in Aristotle"s Poetics, an interest that evidently was not shared by medieval Arab poets, because a poet interested in the Poetics would certainly have wanted to read Homer, to whose epics Aristotle frequently refers. But Homer was not translated into Arabic until modern times.
Which one of the following, if true, most strongly supports the argument above?
单选题Thetableaboveshowsthecost,indollars,oftravelingtoandfromcitiesA,B,C,D,E,andF.AsalesrepresentativewantstoleavefromA,traveltoC,E,andF,andreturntoA.IfthefirstcitythatthesalesrepresentativetravelstomustbeE，whatistheminimumpossiblecostfortheentiretrip?
单选题If k and n are integers, is n divisible by 7? (1)n-3=2k (2)2k-4 is divisible by 7.
单选题A study of the difference in earnings between men and women in the country of Naota found that the average annual earnings of women who are employed full time is 80 percent of the average annual earnings of men who are employed full time. However, other research consistently shows that, in Naota, the average annual earnings of all employed women is 65 percent of the average annual earnings of all employed men.
Which one of the following, if also established by research, most helps explain the apparent discrepancy between the research results described above?
单选题Eachstepofastaircaseis0.25meterwideand0.20meterhigh,asshowninthefigureabove.Allanglesshowninthefigurearerightangles.Iftheheightofthestaircaseis3.6metersandthelandingatthetopofthestaircaseis1meterwide,howlong,inmeters,isAB?
单选题Inthefigureabove,DA=DB=DC,whatisthevalueofx?
单选题According to a recent cross-cultural study, married people in general have longer life expectancies than do people who divorce and do not remarry. This fact indicates that the stress associated with divorce adversely affects health.
Which of the following, if true, points to a weakness in the argument above?
单选题Recent audits revealed that BanqueCard, a credit service, has erred in calculating the interest it charges its clients. But BanqueCard"s chief accountant reasoned that the profits that the company shows would remain unaffected by a revision of its clients" credit statements to correct its previous billing errors, since just as many clients had been overcharged as undercharged.
Which of the following is a reasoning error that the accountant makes in concluding that correcting its clients" statements would leave BanqueCard"s profits unaffected?
单选题An even number x divided by 7 give some quotient plus a remainder of 6. Which of the following, when added to x, gives a sum which must be divisible by 14?
单选题If x and y are integers and xy=5, then (x+y)2=
单选题Whenanobjectisdropped,thenumberoffeetNthatitfallsisgivenbytheformula,wheretisthetimeinsecondssinceitwasdroppedandgis32.2,ifittakes5secondsfortheobjecttoreachtheground,howmanyfeetdoesitfallduringthelast2seconds?
单选题Theoperation*isdefinedasfollows：.Whatisthevalueof(6)*(4)?