已选分类
管理学工商管理
单选题If n is a positive integer and k+2=3n, which of the following could NOT be a value of K? (A) 1 (B) 4 (C) 7 (D) 25 (E) 79
单选题权数对算术平均数的影响作用，实质上取决于( )。 A．作为权数的各组单位数占总体单位数比重的大小 B．各组标志值占总体标志值比重的大小 C．标志值本身的大小 D．总体单位数量的多少
单选题Residents of an apartment complex are considering two possible plans for collecting recyclable trash. Plan 1—Residents will deposit recyclable trash in municipal dumpsters located in the parking lot. The trash will be collected on the first and the fifteenth days of each month. Plan 2—Residents will be given individual containers for recyclable trash. The containers will be placed at the curb twice a week for trash collection.
Which of the following points raised at a meeting of the residents, if valid, would most favor one of the recycling plans over the other?
单选题Ifaandbarepositiveintegers,whatisthevalueofa+b?(2)Thegreatestcommondivisorofaandbis1.(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George Bernard Shaw wrote: “That any sane nation, having observed that you could provide for the supply of bread by giving bakers a pecuniary interest in baking for you, should go on to give a surgeon a pecuniary interest in cutting off your leg is enough to make one despair of political humanity.”
Shaw"s statement would best serve as an illustration in an argument criticizing which of the following?
单选题下面数列中不属于分配数列的是( )。 A．品质数列 B．单项数列 C．时间数列 D．组距数列
单选题Whatisthecircumferenceofthecircleabove?(1)ThelengthofarcXYZis18.(2)r=s
单选题Neither the Sami nor the Kephrian delegations attended the international conference. Beforehand, the delegations of Daqua and Kephria, allies whose governments had grievances against Tessia, officially announced that one or both of the two would stay away if the Tesssian delegation attended the conference. In response, the Sami delegation officially announced that it would definitely attend if both the Daquan and Kephrian delegations stayed away.
If the statements given are all true and all the delegations adhered to their official announcements, it must also be true that the
单选题 CANCELATION FEES Days prior to Departure Percent of Package Price 46 or more 10% 45～31 35% 30～16 50% 15～5 65% 4 or fewer 100% The table above shows the cancellation fee schedule that a travel agency uses to determine the fee charged to a tourist who cancels a trip prior to departure. If a tourist canceled a trip with a package price of$1,700 and a departure date of September 4, on what day was the trip canceled? (1)The cancellation fee was $595. (2)If the trip had been canceled one day later, the cancellation fee would have been $255 more.
单选题In the xy-coordinate system, if(a, b)and(a+3, b+k)are two points on the line defined by the equation x=3y-7, then k
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单选题下列调查中，调查单位与填报单位一致的是( )。 A．企业设备调查 B．人口普查 C．农村耕畜调查 D．工业企业现状调查
单选题Left-handed persons suffer more frequently than do righthanded persons from certain immune disorders, such as allergies. Left-handers tend to have an advantage over the righthanded majority, however, on tasks controlled by the right hemisphere of the brain, and mathematical reasoning is strongly under the influence of the right hemisphere in most people.
If the information above is true, it best supports which of the following hypotheses?
单选题符号检验时，若样本n＜30。就要用( )。 A．正态分布处 B．二点分布处理 C．二项分布处理 D．泊松分布处理
单选题若要检验两个独立样本是否取自均值相等的总体，则可采用( )。 A．独立性检验 B．成对比较检验 C．曼一惠特尼U检验 D．游程检验
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单选题In each production lot for a certain toy, 25 percent of the toys are red and 75 percent of the toys are blue. Half the toys are size A and half are size B．If 10 out of a lot of 100 toys are red and size A, how many of the toys are blue and size B? (A) 15 (B) 25 (C) 30 (D) 35 (E) 40
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50～51题基于以下题干：
纯种赛马是昂贵的商品。一种由遗传缺陷引起的疾病威胁着纯种赛马，使它们轻则丧失赛跑能力，重则瘫痪甚至死亡。因此，赛马饲养者认为，一旦发现有此种缺陷的赛马应停止饲养。这种看法是片面的。因为一般地说，此种疾病可以通过饮食和医疗加以控制。另外，有此种遗传缺陷的赛马往往特别美，这正是马术表演特别看重的。
单选题How many integers n are there such that r＜n＜s? (1)s-r=5 (2)r and s are not integers. (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 an integer n is divisible by both 6 and 8, then it must also be divisible by which of the following? (A) 10 (B) 12 (C) 14 (D) 16 (E) 18