已选分类
管理学工商管理
单选题从形式看，编制总指数的方法主要有( )。 A．综合指数和个体指数 B．综合指数与平均数指数 C．综合指数与平均指标指数 D．数量指数与质量指数
单选题A rectangular circuit board is designed to have width叫inches, perimeter p inches, and area k square inches. Which of the following equations must be true?
单选题On a scale that measures the intensity of a certain phenomenon, a reading of n+1 corresponds to an intensity that is 10 times the intensity corresponding to a reading of n. On that scale, the intensity corresponding to a reading of 8 is how many times as great as the intensity corresponding to a reading of 3?
单选题A researcher studying drug addicts found that, on average, they tend to manipulate other people a great deal more than nonaddicts do. The researcher concluded that people who frequently manipulate other people are likely to become addicts.
Which of the following, if true, most seriously weakens the researcher"s conclusion?
单选题决策者对未来的情况不能完全确定，但未来情况出现的可能性——概率的具体分布是已知或可以估计 的，这种情况下的决策称为：
单选题During the nineteenth century, Britain"s urban population increased as its rural population diminished. A historian theorizes that, rather than industrialization"s being the cause, this change resulted from a series of migrations to urban areas, each occasioned by a depression in the agrarian economy. To test this hypothesis, the historian will compare economic data with population census data.
The historian"s hypothesis would be most strongly supported if which of the following were found to be true?
单选题电信公司对每部固定电话收取月租费，同时根据通话时间收取通话费，这种定价方法被称为：
单选题实物计量单位不包括( )。 A．标准实物单位 B．劳动单位 C．自然单位 D．度量衡单位
单选题If Pat bought a tennis shirt with matching shorts, what was the cost of the shirt? (1)The total cost of the shirt and shorts was $20. (2)The ratio of the cost of the shirt to the cost of the shorts was 2:3.
单选题A certain truck manufacturer must have sales of $4.5 billion to break even this year. If the manufacturer had sales of $ 1.9 billion for the first half of the year, then, to break even for the year, its sales for the second half must be approximately what percent higher than its sales for the first half? (A) 11% (B) 16% (C) 27% (D) 37% (E) 58%
单选题For any positive integer n, n＞1, the "length" of n is the number of positive primes (not necessarily distinct) whose product is n. For example, the length of 50 is 3 since 50=(2)(5)(5) Which of the following integers has length 3?
单选题
物权法规定的担保物权不包括：（ ）
A、抵押权 B、质押权 C、经营权 D、典权
单选题The participants in a race consisted of 3 teams with 3 runners on each team. A team was awarded 6-n points if one of its runners finished in nth place, where 1≤n≤5. If all of the runners finshed the race and if there were no ties, was each team awarded at least one point? (1)No team was awarded more than a total of 6 points. (2)No pair of teammates finished in consecutive places among the top five places.
单选题
单选题按某一变量进行分组的统计表是( )。 A．单一表 B．一览表 C．简单表 D．分组表
单选题如果用p表示商品的价格，用q表示商品销售量，则∑q1p1-∑q1p0综合反映( )。 A．商品价格和商品销售量变动的绝对值 B．商品销售额变动的绝对额 C．多种商品价格变动使商品销售额变动的绝对值 D．由于销售量的变动对销售额变动的影响程度
单选题在方差分析中，随机误差 A．只存在于组内方差中 B．只存在于组间方差中 C．既存在于组内方差，又存在于组间方差中 D．是由系统性因素造成的
单选题What is the probability that events A and B both occur?
(1)The probability that event A occurs is 0.8.
(2)The probability that event B occurs is 0.6.
单选题企业给当场付清货款的客户以一定的金额的减价，这被称为：
单选题Ofthefournumbersrepresentedonthenumberlineaboveisrclosesttozero?(1)q=-s(2)-t＜q