已选分类
管理学工商管理
单选题What is the value of the two-digit num-ber x? (1)The sum of the two digits is 4. (2)The difference between the two digits is 2. (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．
单选题利用统计图来表现和分析统计资料的方法是( )。 A．统计表法 B．统计地图法 C．形象法 D．统计图示法
单选题连续型变量适合编制( )。 A．异距数列 B．等距数列 C．单项数列 D．组距数列
单选题若用90/%的置信水平对总体均值进行大样本双侧区间估计，则Z值为( )。 A．0.45 B．0.90 C．1.96 D．1.645
单选题茎叶图用来分析( )。 A．已分组资料分类型数据 B．未分组的原始数值型数据 C．未分组的时间型数据 D．已分组资料数值型数据
单选题On a purchase of $120， a store offered a payment plan consisting of a $20 down payment and 12 monthly payments of $10 each. What percent of the purchase price， to the nearest tenth of a percent, did the customer pay in interest by using this plan?
单选题A certain ear increased its average speed by 5 miles per hour in each successive 5-minute interval after the first interval. If in the first 5-minute interval its average speed was 20 miles per hour, how many miles did the car travel in the third 5-minute interval?
单选题According to official government records, in Greenland the suicide rate (suicides per 1,000 people) was seventeen times greater in 1987 than in 1960. Because Greenland changed from a hunting and fishing society to an industrial society between 1960 and 1987, the dramatic increase in suicide must be a result of this societal change.
Which of the following, if true, casts the most serious doubt on the conclusion drawn above?
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?
单选题4．次数分配数列是( )。 A．按数量标志分组形成的数列 B．按品质标志分组形成的数列 C．按数量标志或品质标志分组形成的数列 D．按总体单位数分组形成的数列
单选题If represents one of the operations +,-, and×, is k·(1+m)=(k·1)+(k·m) for all numbers k, 1 and m? (1)k·1 is not equal to 1·k for some numbers k. (2)·represents subtraction.
单选题A store currently charges the same price for each towel that it sells. If the current price of each towel were to be increased by $1,10 fewer of the towels could be bought for $120, excluding sales tax. What is the current price of each towel?
单选题动态数列中各项指标数值之和有独立经济意义的是( )。 A．绝对数动态数列 B．平均数动态数列 C．时期数列 D．时点数列
单选题OnacertaindayittookBillthreetimesaslongtodrivefromhometoworkasittookSuetodrivefromhometowork.HowmanyKilometersdidBilldrivefromhometowork?(1)Suedrove10kilometersfromhometowork,andtheratioofwasthesameforBillandSuethatday.(2)TheratioofforSuethatdaywas64kilometersperhour.(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Inthefigureabove,whatisthevalueof2x-y7
单选题What is the tens digit of positive integer x? (1)x divided by 100 has a remainder of 30. (2)x divided by 110 has a remainder of 30.
单选题全国粮食产量与全国人口比较，属于( )。 A．平均指标 B．强度相对指标 C．计划完成相对指标 D．比较相对指标
单选题在产品发展的成熟阶段与饱和阶段里，销售量如果不到行业领先销售量 5%的企业，不适宜采取的战 略是：
单选题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
单选题两变量的相关系数为0.8，说明( )。 A．两变量不相关 B．两变量负相关 C．两变量不完全相关 D．两变量完全正相关