已选分类
管理学工商管理
单选题If the sum of a set of ten different positive prime numbers is an even number, which of the following prime numbers CANNOT be in the set?
单选题Ben and Ann are among 7 contestants from which 4 semifinalists are to be selected. Of the different possible selections, how many contain neither Ben nor Ann? (A) 5 (B) 6 (C) 7 (D) 14 (E) 21
单选题Sue is now 10 years younger than Jane. If in 5 years, Jane will be twice as old as Sue, how old will Sue be in 3 years?
单选题Questionsrefertothefollowinggraph.1977～1978TEXTB()OKINVENTORYFORSCHOOLSXANDYBYYEAROFPURCHASE(asapercentofthe1977～1978inventory)Note：AllbookswerepurchasednewonJuly1ofeachyear.
单选题Public reports by national commissions, governors" conferences, and leadership groups have stressed the great need for better understanding of international affairs by the citizenry. If the country is to remain a leading nation in an era of international competitiveness, the need is undeniable. If there is such a need for the citizenry to have a better understanding of international affairs, then all of our new teachers must be prepared to teach their subject matter with an international orientation.
If all of the statements in the passage are true, which one of the following must also be true?
单选题An overly centralized economy, not the changes in the climate, is responsible for the poor agricultural production in Country X since its new government came to power. Neighboring Country Y has experienced the same climatic conditions, but while agricultural production has been falling in Country X, it has been rising in Country Y.
Which of the following, if true, would most weaken the argument above?
单选题In a refinery, the capacity of oil tank A is 70 per cent of the capacity of oil tank B. How many more gallons of oil are in tank A than in tank B? (1)Tank A is 90 percent full; tank B is 50 percent full. (2)When full, tank A contains 50,000 gallons of oil. (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Committee X and committee Y, which have no common members, will combine to form Committee Z. Does Committee X have more members than Committee Y? (1)The average (arithmetic mean) age of the members of Committee X is 25.7 years and the average age of the members of Committee Y is 29.3 years. (2)The average (arithmetic mean) age of the members of Committee Z will be 26.6 years. (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Set S consists of n distinct positive integers, none of which is greater than 12. What is the greatest possible value of n if no two integers in S have a common factor greater than 1?
单选题Acertainalloycontainsonlylead,copper,andtin.Howmanypoundsoftinarecontainedin56poundsofthealloy?(1)Byweightthealloyisleadandcopper.(2)Byweightthealloycontains6partsleadand5partscopper
单选题In the workplace, influenza is typically spread by infected individuals to others with whom they work in close quarters. A new medication that suppresses the symptoms of influenza therefore will actually increase the number of influenza cases, because this medication will allow people who would otherwise be home in bed to return to work while infected.
Which of the following, if true, most seriously challenges the prediction?
单选题划分离散变量的组限时，相邻两组的组限( )。 A．必须是间断的 B．必须是重叠的 C．既可以是间断的，也可以是重叠的 D．应当是相近的
单选题
我国合同担保的诸方式中，法定担保方式是（ ）。
A、保证 B、抵押 C、留置 D、定金
单选题
单选题If x and y are integers and xy=5, then (x+y)2= (A) 13 (B) 16 (C) 25 (D) 26 (E) 36
单选题若杜宾—沃森检验统计量d＞4-dL，说明误差项ε( )。 A．存在正自相关 B．存在负自相关 C．无自相关 D．不能确定
单选题Iftherevenuefromthesaleofappleswasequaltotherevenuefromthesaleofmiscellaneousitems,whatPERCENToftherevenuefromthesaleoffruitandvegetableswasaccountedforbyapples?
单选题What is the remainder when the positive integer x is divided by 2? (1)x is an odd integer. (2)x is a multiple of 3. (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DuringthefouryearsthatMrs.Lopezownedhercar,shefoundthathertotalcarexpenseswere$18,000.Fuelandmaintenancecostsaccountedforofthetotalanddepreciationaccountedforoftheremainder.Thecostofinsurancewas3timesthecostoffinancing,andtogetherthesetwocostsaccountedforofthetotal.Iftheonlyotherexpensesweretaxesandlicensefees,thenthecostoffinancingwashowmuchmoreorlessthanthecostoftaxesandlicensefees?(A)$1,500more(B)$1,200more(C)$100less(D)$300less(E)$1,500less
单选题统计调查中，搜集统计资料的方法有( )。 A．直接观察法、普查和抽样调查 B．直接观察法、报告法、访问法 C．问卷调查法、统计报表和抽样调查 D．面谈调查、邮寄调查、电话调查