已选分类
管理学
单选题Town T has 20,000 residents, 60 percent of whom are female. What percent of the residents were born in Town T?
(1)The number of female residents who were born in Town T is twice the number of male residents who were not born in Town T.
(2)The number of female residents who were not born in Town T is twice the number of male residents who were born in Town T.
单选题Intherectangularcoordinatesystemabove,theliney=xistheperpendicularbisectorofsegmentAB(notshown),andthex-axisistheperpendicularbisectorofsegmentBC(notshown).IfthecoordinatesofpointAare(2,3),whatarethecoordinatesofpointC?
单选题Country Y uses its scarce foreign-exchange reserves to buy scrap iron for recycling into steel. Although the steel thus produced earns more foreign exchange than it costs, that policy is foolish. Country Y"s own territory has vast deposits of iron ore, which can be mined with minimal expenditure of foreign exchange.
Which of the following, if true, provides the strongest support for Country Y"s policy of buying scrap iron abroad?
单选题Under current federal law, employers are allowed to offer their employees free parking spaces as a tax-free benefit, but they can offer employees only up to $180 per year as a taxfree benefit for using mass transit. The government could significantly increase mass transit ridership by raising the limit of this benefit to meet commuters" transportation costs. The proposal above to increase mass transit ridership assumes that
单选题Most employees in the computer industry move from company to company, changing jobs several times in their careers. However, Summit Computers is known throughout the industry for retaining its employees. Summit credits its success in retaining employees to its informal, nonhierarchical work environment.
Which of the following, if true, most strongly supports Summit"s explanation of its success in retaining employees?
单选题Maryinvested$8,400for6monthsinacertificateofdepositpayingpercentsimpleannualinterest.HowmuchmoreinterestwouldMaryhavereceivediftheinterestrateonthiscertificatehadbeen9percentsimpleannualinterest?
单选题SolutionYis30percentliquidXand70percentwater.If2kilogramsofwaterevaporatefrom8kilogramsofsolutionYand2kilogramsofsolutionYareaddedtotheremaining6kilogramsofliquid,whatpercentofthisnewsolutionisliquidX?
单选题Grazing livestock on public land in the western United States is not causing widespread environmental damage in the region, since if it were, the condition of that land would not be improving. However, only 14 percent of public land in the area today is considered to have inadequate vegetation cover and, therefore, to be in poor condition, while in the 1930"s, 36 percent had inadequate vegetation cover.
Which of the following, if true, most seriously weakens the argument above?
单选题The ratio，by volume, of soap to alcohol to water in a certain solution is 2:50:100. The solution will be altered so that the ratio of soap to alcohol is doubled while the ratio of soap to water is halved. If the altered solution will contain 100 cubic centimeters of alcohol, how many cubic centimeters of water will it contain? (A) 50 (B) 200 (C) 400 (D) 625 (E) 800
单选题Eachnumberinthearrangementaboveisobtainedfromthetwonearestnumbersinthecolumnimmediatelytotheleftbysubtractingtheuppernumberfromthelowernumber.Whatisthevalueofz?(1)x=7(2)t=5
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 (A) $3.00 (B) $3.75 (C)$4.50 (D) $5.00 (E) $5.50
单选题Acomputergeneratesnon-zeronumbersforthefigureabovesothattheproductofthenumbersalonganyverticalcolumnisequaltotheproductofthenumbersinanyhorizontalrow.Whatnumberdoes8represent?(1)uequals6.(2)tequals2.(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All of the tickets for two real estate seminars, F and G, were either purchased or given away, and the ratio of F tickets to G tickets was 2 to 1. Of the total number of F tickets and G tickets, what percentage was purchased? (1)The total number of F tickets and G tickets is 240. (2)Of the F tickets, exactly 60 percent were purchased, and of the G tickets, exactly 80 percent were purchased.
单选题The United States ranks far behind countries such as Sweden and Canada when it comes to workplace safety. In all three countries, joint labor-management committees that oversee workplace safety conditions have been very successful in reducing occupational injuries. In the United States, such committees are found only in the few companies that have voluntarily established them. However, in Sweden and several Canadian provinces, joint safety committees are required by law and exist in all medium-sized and large workplaces.
Which one of the following is supported by the information above?
单选题The United States is not usually thought of as a nation of parakeet lovers. Yet in a census of parakeet owners in selected comparable countries, the United States ranked second, with eleven parakeet owners per hundred people. The conclusion can be drawn from this that people in the United States are more likely to own parakeets than are people in most other countries.
Knowledge of which of the following would be most useful in judging the accuracy of the conclusion?
单选题Students at a certain university have complained that some of their professors do not provide copies of their lecture notes at every class. The student body president has argued that, in order to further the educational purposes of the university, all professors should be required to post their lecture notes online.
Which of the following, if true, most weakens the students" argument that the professors should be required to post their lecture notes online?
单选题Amillinerboughtalotofhats,ofwhichwerebrown.Themillinersoldofthehatsincludingofthebrownhats.Whatfractionoftheunsoldhatswerebrown?
单选题A digital wristwatch was set accurately at 8:30 a.m. and then lost 2 seconds every 5 minutes. What time was indicated on the watch at 6:30 p.m. of the same day if the watch operated continuously until that time? (A) 5:56 (B) 5:58 (C)6:00 (D) 6:23 (E) 6:26
单选题A person bought a ticket to a ball game for $15 and later sold the ticket for $60. What was the percent increase in the price of the ticket?
单选题If n=p+r, where n, p, and r are positive integers and n is odd, does p equal 2? (1)p and r are prime numbers. (2)r≠2 (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．