已选分类
管理学
1单选题Inthefigureabove,whatisthelengthofPQtimesthelengthofRS?(1)ThelengthofPQis5.(2)ThelengthofORtimesthelengthofPRisequalto12.
2单选题Accordingtothegraphabove，whenx=3,yismostnearly
3单选题In△ABCabove,ifAB=BC,whatisthevalueofy?(1)x=50(2)z=130
4单选题已知直线ax一by+3=0(a＞0，b＞0)过圆x
2
+4x+y
2
一2y+1=0的圆心，则ab的最大值为( )．
5单选题已知直线l是x
2
+y
2
=5在点(1，2)的切线，则l在y轴上的截距是( )．
6单选题Ifab≠0,inwhatquadrantofthecoordinatesystemabovedoespoint(a,b)lie?(1)(b,a)liesinquadrantⅣ.(2)(a,-b)liesinquadrantⅢ.
7单选题IfthenumberofsquareunitsintheareaofacircleisAandthenumberof1inearunitsinthecircumferenceisC,whatistheradiusofthecircle?(1)(2)A＞C+3
8单选题A grocer is storing small cereal boxes in large cartons that measure 25 inches by 42 inches by 60 inches. If the measurement of each small cereal box is 7 inches by 6 inches by 5 inches, then what is the maximum number of small cereal boxes that can be placed in each large carton?
9单选题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(2)联合起来充分。D．条件(1)充分，条件(2)也充分。E．条件(1)和(2)单独都不充分，条件(1)和条件(2)联合起来也不充分。
10单选题RectangularregionPQRSshownaboveispartitionedintotenidenticalsmallerrectangularregions,eachofwhichhaswidthx.WhatistheperimeterofPQRSintermsOfx?
11单选题如图，在直角三角形ABC中，AC=4，BC=3，DE／／BC，已知梯形BCDE的面积为3，则DE=()．
12单选题Inthefigureabove,segmentsRSandTUrepresenttwopositionsofthesameladderleaningagainstthesideSVofawall.ThelengthofTVishowmuchgreaterthanthelengthofRV?(1)The1engthofTUis10meters.(2)ThelengthofRVis5meters.
13单选题What is the volume of a certain rectangular solid? (1)Two adjacent faces of the solid have areas 15 and 24, respectively. (2)Each of two opposite faces of the solid has area 40.
14单选题Aportionofathermometeraboveiscalibratedtoshowdegreesinequalincrements.IfthetemperatureindicatesareadingatlevelA,whatisthetemperature?
15单选题如图所示长方形ABCD中的AB=10厘米，BC=5厘米，以AB和AD分别为半径作圆，则图中阴影部分的面积为()．
16单选题如图，一个储物罐的下半部分是底面直径与高度均是20米的圆柱形．上半部分(顶部)是半球形，已知底面与顶部的造价是400元／米2，侧面的造价是300元／米2，该储物罐的造价是(π=3．14)()．
17单选题Inthefigureabove,squareCDEFhasarea4.Whatistheareaof△ABF?
18单选题Inthefigureabove,segmentsPRandQRareeachparalleltooneoftherectangularcoordinateaxes.IstheratioofthelengthofQRtothelengthofPRequalto1?(1)c=3andd=4(2)a=-2andb=-1
19单选题RectangleWXYZisinscribedinacirclewithcenterOasshownabove.Ifthediameterofthecircleisequalto16,thenwhatistheareaoftheshadedregion?(1)WZ=OW(2)XW＜XY
20单选题Theshadedregioninthefigureaboverepresentsarectangularframewithlength18inchesandwidth15inches.Theframeenclosesarectangularpicturethathasthesameareaastheframeitself.Ifthelengthandwidthofthepicturehavethesameratioasthelengthandwidthoftheframe,whatisthelengthofthepicture,in-inches?