已选分类
管理学工商管理
单选题Ifaandbarepositiveintegers,whatisthevalueofa+b?(2)Thegreatestcommondivisorofaandbis1.
单选题If x and y are integers, is xy+1 divisible by 3? (1)When x is divided by 3, the remainder is 1. (2)When y is divided by 9, the remainder is 8. (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．
单选题某公司股票的β系数为 1．8，无风险报酬率为 4％，市场上所有股票的平均报酬 率为 8％，则该公司股票的投资报酬率应为：( )
单选题What is the least positive integer that is divisible by each of the integers 1 through 7, inclusive?
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. (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．
单选题上、下四分位数在数据中所处的位置分别是 A．25/%，50/% B．25/%，75/% C．50/%，25/% D．75/%，25/%
单选题要了解某校学生的学习情况，则总体单位是( )。 A．该校全体学生 B．该校每一名学生 C．该校全体学生的学习成绩 D．该校每一名学生的学习成绩
单选题A total of 40 brand X television sets and 80 brand Y television sets were purchased for a motel chain. If the price of each brand Y set was twice the price of each brand X set, what percent of the total bill was the price of a brand Y set? (A) 0.25% (B) 0.5% (C) 0.625% (D) 0.833% (E) 1.0%
单选题Found in caves with the bones of australopithecines, which are thought by some to be ancient ancestors of the human species, were great collections of animal bones. From the frequencies of types of bones, it can be seen that many bones represented only parts of animals that must have died elsewhere. The australopithecines thus must have been mighty hunters, to have brought home so much meat.
Which of the following, if true, most seriously weakens the conclusion drawn above?
单选题利用一个已通过检验的回归模型，我们可以( )。 A．估计未来所需样本的容量 B．计算相关系数与判定系数 C．以给定的因变量的值估计自变量的值 D．以给定的自变量的值估计因变量的值
单选题反映企业在一定时期内能源消耗总水平和总成果的主要指标称为单位产值综合能耗又称( )。 A．单位产量综合能耗 B．万元产值综合能耗 C．单位产品综合能耗
单选题6．下列只能进行计数运算的是( )。 A．定名测定 B．序列测定 C．定距测定 D．定比测定
单选题下列哪项指标能反映综合产品全部质量特征的差异( )。 A．产品的平均技术性能或平均含量指标 B．产品寿命及实用性指标 C．产品质量分指标 D．产品等级品分类与平均等级
单选题下面的函数关系是( )。 A．销售人员测验成绩与销售额大小的关系 B．圆周的长度决定于它的半径 C．家庭的收入和消费的关系 D．数学成绩与统计学成绩的关系
单选题In 1985 a company sold a brand of shoes to retailers for a fixed price per pair. In 1986 the number of pairs of the shoes that the company sold to retailers decreased by 20 percent, while the price per pair increased by 20 percent. If the company's revenue from the sale of the shoes in 1986 was $3.0 million, what was the approximate revenue from the sale of the shoes in 1985?
单选题全面调查与非全面调查是以( )。 A．时间是否连续来划分的 B．最后取得的资料是否全面来划分的。 C．调查对象所包括的单位是否完全来划分的 D．调查组织规模的大小来划分的。
单选题Is the positive integer x an even number? (1)If z is divided by 3, the remainder is 2. (2)If x is divided by 5, the remainder is 2.
单选题编制质量指标指数一般是采用( )作同度量因素。 A．基期质量指标 B．报告期质量指标 C．基期数量指标 D．报告期数量指标
单选题Salesperson A's compensation for any week is $360 plus 6 percent of the portion of A's total sales above $1,000 for that week. Salesperson B's compensation for any week is 8 percent of B's total sales for that week. For what amount of total weekly sales would both salespeople earn the same compensation?
单选题点估计( )。 A．不考虑抽样误差及可靠程度 B．考虑抽样误差及可靠程度 C．适用于推断的准确度要求高的情况 D．无须考虑无偏性、有效性、一致性