已选分类
管理学工商管理
单选题RectangularregionPQRSshownaboveispartitionedintotenidenticalsmallerrectangularregions,eachofwhichhaswidthx.WhatistheperimeterofPQRSintermsOfx?
单选题Within 20 years it will probably be possible to identify the genetic susceptibility an individual may have toward any particular disease. Eventually, effective strategies will be discovered to counteract each such susceptibility. Once these effective strategies are found, therefore, the people who follow them will never get sick.
The argument above is based on which of the following assumptions?
单选题若已知某网站4月份平均员工人数为84人，5月份平均员工人数为72人，6月份平均员工人数为84人，7月份平均员工人数为96人，则二季度该网站的月平均员工人数为( )。 A．84 B．80 C．82 D．83
单选题
59～60题基于以下题干：
F、G、J、K、L和M六人应聘某个职位。只有被面试才能被聘用。以下条件必须满足：
如果面试G，则面试J。 如果面试J，则面试L。 F被面试。
除非面试K，否则不聘用F。
除非面试M，否则不聘用K。
单选题在抽样之前对每一个单位进行编号，然后才能使用随机数表等方法抽选样本单位，这种方法属于( )。 A．简单随机抽样 B．等距抽样 C．类型抽样 D．整群抽样
单选题某地区某年9月末的人口数为150万人，10月末的人口数为150.2万人，该地区10月的人口平均数为( )。 A．150万人 B．150.2万人 C．150.1万人 D．无法确定
单选题When airlines were deregulated in the 1970s, the average price of a ticket was $135. Three decades later, the average price is $275, there are twice as many in-air collisions, fliers in small markets are at the mercy of predatory carriers, and air rage is at an all-time high. It is time to re-regulate the air travel industry.
All of the following statements, if true, weaken the above argument except for which statement?
单选题"This company will not be training any more pilots in the foreseeable future, since we have 400 trained pilots on our waiting list who are seeking employment. The other five major companies each have roughly the same number of trained pilots on their waiting lists, and since the projected requirement of each company is for not many more than 100 additional pilots, there will be no shortage of personnel despite the current upswing in the aviation industry. "
Which one of the following, if true, casts the most doubt on the accuracy of the above conclusion?
单选题 January 32，14，24，28 April 45，50，58，47， June 76，80，74，79 August 84，95，100，89 November 48，43，39，42 In a set of measurements, the range is defined as the greatest measurement minus the least measurement．According to the table above, during the first four days of which month was the range of temperatures at noon the greatest?
单选题10．从客观对象量化分析的难易程度来看，定比测定与定序测定相比，( )。 A．是更为容易的 B．是更为困难的 C．是差不多的 D．是无法比较的
单选题抽样平均误差反映样本指标与总体指标之间的( )。 A．实际误差 B．实际误差的绝对值 C．平均误差程度 D．可能误差范围
单选题分配数列中，当标志值较小而权数较大时，计算的算术平均数( )。 A．接近标志值大的一方 B．接近标志值小的一方 C．不受权数的影响 D．不能确定其移动方向
单选题Inthefigureabove,segmentsRSandTUrepresenttwopositionsofthesameladderleaningagainstthesideSVofawall.ThelengthofTVishowmuchgreaterthanthelengthofRV?(1)The1engthofTUis10meters.(2)ThelengthofRVis5meters.
单选题Pollutants in the atmosphere can cause acid rain (rain with high acidity levels). While acid rain in itself cannot significantly affect the acidity of bodies of water into which it falls, it can greatly increase the acidity of nearby lakes by increasing the amount of decaying matter on a forest floor. A recent increase in the acidity of the water in Forest Lake, therefore, surely indicates that the rain failing nearby has become more acid.
Which of the following, if tree, most seriously weakens the argument?
单选题
单选题Maryinvested$8,400for6monthsinacertificateofdepositpayingpercentsimpleannualinterest.HowmuchmoreinterestwouldMaryhavereceivediftheinterestrateonthiscertificatehadbeen9percentsimpleannualinterest?(A)$2.10(B)$21.00(C)$42.00(D)$210.00(E)$420.00
单选题几位学生的某门课成绩分别是：60分、75分、83分、90分、96分，则“成绩”是( )。 A．标志值 B．数量指标 C．数量标志 D．品质标志
单选题A car traveled 462 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city. If the car traveled 6 fewer miles per gallon in the city than on the highway, how many miles per gallon did the car travel in the city? (A) 14 (B) 16 (C) 21 (D) 22 (E) 27
单选题在重复简单随机抽样下，抽样平均误差要减少1/3，则样本单位数就要扩大到( )。 A．4倍 B．2倍 C．3倍 D．9倍
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