已选分类
管理学工商管理
单选题
单选题Low-income families are often unable to afford as much child care as they need. One government program would award low-income families a refund on the income taxes they pay of as much as $1,000 for each child under age four. This program would make it possible for all low-income families with children under age four to obtain more child care than they otherwise would have been able to afford.
Which of the following, if true, most seriously calls into question the claim that the program would make it possible for all low-income families to obtain more child care?
单选题What is the value of x2-y2? (1)x+y=2x (2)x+y=0
单选题
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.
单选题Intherectangularcoordinatesystemabove,theliney=xistheperpendicularbisectorofsegmentAB(notshown),andthex-axisistheperpendicularbisectorofsegmentBC(notshown).IfthecoordinatesofpointAare(2,3),whatarethecoordinatesofpointC?
单选题Country Y uses its scarce foreign-exchange reserves to buy scrap iron for recycling into steel. Although the steel thus produced earns more foreign exchange than it costs, that policy is foolish. Country Y"s own territory has vast deposits of iron ore, which can be mined with minimal expenditure of foreign exchange.
Which of the following, if true, provides the strongest support for Country Y"s policy of buying scrap iron abroad?
单选题已知三种产品的基期价格和报告期价格及报告期产值资料，计算其价格总指数宜采用( )。 A．数量指标综合指数公式 B．质量指标综合指数公式 C．加权算术平均数指数公式 D．加权调和平均数指数公式
单选题Most employees in the computer industry move from company to company, changing jobs several times in their careers. However, Summit Computers is known throughout the industry for retaining its employees. Summit credits its success in retaining employees to its informal, nonhierarchical work environment.
Which of the following, if true, most strongly supports Summit"s explanation of its success in retaining employees?
单选题相关分析与回归分析，在是否需要确定自变量和因变量的问题上( )。 A．前者勿需确定，后者需要确定 B．前者需要确定，后者勿需确定 C．两者均需确定 D．两者都勿需确定
单选题Maryinvested$8,400for6monthsinacertificateofdepositpayingpercentsimpleannualinterest.HowmuchmoreinterestwouldMaryhavereceivediftheinterestrateonthiscertificatehadbeen9percentsimpleannualinterest?
单选题Grazing livestock on public land in the western United States is not causing widespread environmental damage in the region, since if it were, the condition of that land would not be improving. However, only 14 percent of public land in the area today is considered to have inadequate vegetation cover and, therefore, to be in poor condition, while in the 1930"s, 36 percent had inadequate vegetation cover.
Which of the following, if true, most seriously weakens the argument above?
单选题抽样平均误差说明抽样指标与总体指标之间的( )。 A．实际误差 B．平均误差 C．实际误差的平方 D．允许误差
单选题对于一个总体而言，下面说法中( )是正确的。 A．只能有一个指标 B．只能有一个标志 C．可以有多个指标 D．可以有多个标志
单选题下列各项中，超额完成计划的是( )。 A．增加值计划完成百分数105/% B．单位成本计划完成百分数105/% C．建筑预算成本计划完成百分数105/% D．流通费用率计划完成百分数105/%
单选题The ratio，by volume, of soap to alcohol to water in a certain solution is 2:50:100. The solution will be altered so that the ratio of soap to alcohol is doubled while the ratio of soap to water is halved. If the altered solution will contain 100 cubic centimeters of alcohol, how many cubic centimeters of water will it contain? (A) 50 (B) 200 (C) 400 (D) 625 (E) 800
单选题Eachnumberinthearrangementaboveisobtainedfromthetwonearestnumbersinthecolumnimmediatelytotheleftbysubtractingtheuppernumberfromthelowernumber.Whatisthevalueofz?(1)x=7(2)t=5
单选题统计调查队对占全国城市人口一半以上的各大城市的某产品零售价格水平进行系统调查，这是( )。 A．全面调查 B．抽样调查 C．重点调查 D．典型调查
单选题已知回归直线方程的判定系数r2=0.81，那么可知( )。 A．相关系数r=0.9 B．相关系数r=-0.9 C．相关系数r=0.9或-0.9 D．无法计算相关系数
单选题若要了解我国苹果生产的基本情况，则采用( )方式比较适合。 A．普查 B．重点调查 C．统计报表制度 D．抽样调查