已选分类
管理学工商管理
单选题If x is the product of three consecutive positive integers, which of the following must be true? Ⅰ. x is an integer multiple of 3. Ⅱ. x is an integer multiple of 4. Ⅲ. x is an integer multiple of 6.
单选题Acertainshadeofgraypaintisobtainedbymixing3partsofwhitepaintwith5partsofblackpaint.If2gallonsofthemixtureisneededandtheindividualcolorscanbepurchasedonlyinone-gallonorhalfgalloncans,whatistheleastamountofpaint,ingallons,thatmustbepurchasedinordertomeasureouttheportionsneededforthemixture?
单选题Workingindependently,Tinacandoacertainjobin12hours.Workingindependently,Anncandothesamejobin9hours.IfTinaworksindependentlyatthejobfor8hoursandthenAnnworksindependently,howmanyhourswillittakeAnntocompletetheremainderofthejob?
单选题Do strong electric currents, by means of the electromagnetic fields that accompany them, cause cancer in people who live and work nearby? Telephone line workers, who work near such currents every day, can provide a test case. They show elevated levels of brain cancer; therefore, the hypothesis of electromagnetic causation is supported.
Which of the following, if true, most seriously weakens the argument?
单选题Aboywalkingalongaroadat3kilometersperhourisovertakenby3trucktravelingat40kilometersperhour.Ifthetruckbreaksdown1kilometerbeyondwhereitpassestheboy,howmanyminutesafterthebreakdowndoestheboyreachthetruck?
单选题To reduce costs, a company is considering a drastic reduction in the number of middle-level managers. This reduction would be accomplished by first offering early retirement to those 50 years of age or older with 15 years of service, and then by firing enough of the others to bring the overall reduction to 50 percent.
Each of the following, assuming that it is a realistic possibility, is a possible disadvantage to the company of the plan EXCEPT:
单选题When a person is under intense psychological stress, his or her cardiovascular response is the same as it is during vigorous physical exercise. Psychological stress, then, must be beneficial for the heart as is vigorous physical exercise.
The argument above relies on which of the following assumptions?
单选题A 2-year certificate of deposit is purchased for k dollars. If the certificate earns interest at an annual rate of 6 percent compounded quarterly, which of the following represents the value, in dollars, of the certificate at the end of the 2 years? (A) (1.06)2k (B) (1.06)8k (C) (1.015)2k (D) (1.015)8k (E) (1.03)4k
单选题How many minutes long is time period X? (1)Time period X is 3 hours-long. (2)Time period X starts at 11 p.m. and ends at 2 a.m.
单选题If a certain grove consists of 36 pecan trees, what was the yield per tree last year?
(1)The yield per tree for the 18 trees in the northern half of the grove was 60 kilograms last year.
(2)The yield per tree for the 18 trees in the eastern half of the grove was 55 kilograms last year.
单选题Scientists now believe that artificial-hip implants, previously thought to be safe, may actually increase the risk of cancer in recipients after about 45 years of use. Though these implants do improve the quality of recipients" lives, the increased risk of cancer is an unacceptable price to pay for these improvements. Therefore, they should be banned.
Which of the following, if true, is the strongest counterargument to the argument above?
单选题A merchant purchased a jacket for $60 and then determined a selling price that equalled the purchase price of the jacket plus a markup that was 25 percent of the selling price. During a sale, the merchant discounted the selling price by 20 percent and sold the jacket. What was the merchant's gross profit on this sale?
单选题How many positive prime numbers are less than the integer n? (1)14＜n＜20 (2)13＜n＜17 (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If r⊙s=rs+r+s, then for what value of s is r⊙s equal to r for all values of r?
单选题Questionsrefertothefollowinggraph.AVERAGECOSTSOFOPERATINGSUBCOMPACT,COMPACT,ANDMIDSIZECARSINTHEUNITEDSTATES,1982～1986
单选题The inflation index for the year 1989 relative to the year 1970 was 3.56, indicating that, on the average, for each dollar spent in 1970 for goods, $3.56 had to be spent for the same goods in 1989. If the price of a Model K mixer increased precisely according to the inflation index, what was the price of the mixer in 1970? (1)The price of the Model K mixer was $102.40 more in 1989 than in 1970. (2)The price of the Model K mixer was $142.40 in 1989. (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Intheadditionproblemabove,thenumber□mustbe(A)5(B)6(C)7(D)8(E)9
单选题When the integer n is divided by 6, the remainder is 3. Which of the following is NOT a multiple of 6? (A) n-3 (B) T+3 (C) 2n (D) 3n (E) 4n
单选题Questionsrefertothefollowinggraph.1977～1978TEXTB()OKINVENTORYFORSCHOOLSXANDYBYYEAROFPURCHASE(asapercentofthe1977～1978inventory)Note：AllbookswerepurchasednewonJuly1ofeachyear.
单选题IftankXcontainsonlygasoline,howmanykilolitersofgasolineareintankX?(1)IfofthegasolineintankXwerepumpedoutthetankwouldbefilledtoofitscapacity.(2)If0.75kiloliterofgasolinewerepumpedintotankX,itwouldbefilledtocapacity.