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函数y=f(x)的图象与直线x=a的交点个数有

发布时间:2021-08-04

A.必有一个

B.一个或两个

C.至多一个

D.可能两个以上

试卷相关题目

  • 1函数y=2x-x2的图象大致是

    A.http://picflow.koolearn.com/upload/papers/g02/20110805/201108051533421251149.gif

    B.http://picflow.koolearn.com/upload/papers/g02/20110805/201108051533421251149.gif

    C.http://picflow.koolearn.com/upload/papers/g02/20110805/201108051533421401148.gif

    D.http://picflow.koolearn.com/upload/papers/g02/20110805/201108051533421561159.gif

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  • 2设函数f(x)(x∈R)满足f(-x)=f(x),f(x+2)=f(x),则y=f(x)的图像可能是

    A.http://picflow.koolearn.com/upload/papers/g02/20110823/201108231559277031620.gif

    B.http://picflow.koolearn.com/upload/papers/g02/20110823/201108231559277181598.gif

    C.http://picflow.koolearn.com/upload/papers/g02/20110823/201108231559277181620.gif

    D.http://picflow.koolearn.com/upload/papers/g02/20110823/201108231559277341630.gif

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  • 3客车从甲地以60 km/h的速度匀速行驶1小时到达乙地,在乙地停留了半小时,然后以80 km/h的速度匀速行驶1小时到达丙地,下列描述客车从甲地出发.经过乙地,最后到达丙地所经过的路程s与时间t之间关系的图象中,正确的是

    A.http://picflow.koolearn.com/upload/papers/g02/20110818/201108180928286872925.gif

    B.http://picflow.koolearn.com/upload/papers/g02/20110818/201108180928287032926.gif

    C.http://picflow.koolearn.com/upload/papers/g02/20110818/201108180928287032940.gif

    D.http://picflow.koolearn.com/upload/papers/g02/20110818/201108180928287182910.gif

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  • 4设函数http://picflow.koolearn.com/upload/papers/g02/20110322/201103220953075391444.gif在点x=1处连续,则a=

    A.http://picflow.koolearn.com/upload/papers/g02/20110322/20110322095328414879.gif   

    B.http://picflow.koolearn.com/upload/papers/g02/20110322/20110322095335695883.gif  

    C.http://picflow.koolearn.com/upload/papers/g02/20110322/20110322095341961882.gif 

    D.http://picflow.koolearn.com/upload/papers/g02/20110322/20110322095349742878.gif

    开始考试点击查看答案
  • 5函数http://picflow.koolearn.com/upload/papers/g02/20110519/20110519162440772987.gif的图象是

    A.http://picflow.koolearn.com/upload/papers/g02/20110519/201105191624407721292.gif

    B.http://picflow.koolearn.com/upload/papers/g02/20110519/201105191624408031301.gif

    C.http://picflow.koolearn.com/upload/papers/g02/20110519/201105191624408031299.gif

    D.http://picflow.koolearn.com/upload/papers/g02/20110519/201105191624408191301.gif

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  • 6如图所示,液体从一个圆锥形漏斗漏入一个圆柱形桶中,开始时漏斗盛满液体,经过漏完.已知圆柱形桶中液面上升的速度是一个常量,H是圆锥形漏斗中液面下落的距离,则H与下落时间t(min)的函数关系式表示的图象只可能是http://picflow.koolearn.com/upload/papers/g02/20110520/201105200953304441644.gif 

    A.http://picflow.koolearn.com/upload/papers/g02/20110520/201105200953304441183.gif

    B.http://picflow.koolearn.com/upload/papers/g02/20110520/201105200953304751174.gif

    C.http://picflow.koolearn.com/upload/papers/g02/20110520/201105200953305061137.gif

    D.http://picflow.koolearn.com/upload/papers/g02/20110520/201105200953305221176.gif

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  • 7四位好朋友在一次聚会上,他们按照各自的爱好选择了形状不同、内空高度相等、杯口半径相等的圆口酒杯.如图所示,盛满酒后他们约定:先各自饮杯中酒的一半,设剩余酒的高度从左到右依次为h1,h2,h3,h4,则它们的大小关系正确的是http://picflow.koolearn.com/upload/papers/g02/20110818/201108180932099681822.gif

    A.h2>h1>h4

    B.h1>h2>h3

    C.h3>h2>h4

    D.h2>h4>h1

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  • 8某学生离家去学校,由于怕迟到,所以一开始就跑步,等跑累了再走余下的路程.在下图中纵轴表示离学校的距离,横轴表示出发后的时间,则下图四个图形中较符合该学生走法的是

    A.http://picflow.koolearn.com/upload/papers/g02/20110622/201106221655163321254.gif

    B.http://picflow.koolearn.com/upload/papers/g02/20110622/201106221655163481244.gif

    C.http://picflow.koolearn.com/upload/papers/g02/20110622/201106221655163791236.gif

    D.http://picflow.koolearn.com/upload/papers/g02/20110622/201106221655163951247.gif

    开始考试点击查看答案
  • 9客车从甲地以60km/h的速度匀速行驶1小时到达乙地,在乙地停留了半小时,然后以80km/h的速度匀速行驶1小时到达丙地.下列描述客车从甲地出发,经过乙地,最后到达丙地所经过的路程s与时间t之间关系的图象中,正确的是

    A.http://picflow.koolearn.com/upload/papers/g02/20110808/201108081449174373311.gif

    B.http://picflow.koolearn.com/upload/papers/g02/20110808/201108081449174533331.gif

    C.http://picflow.koolearn.com/upload/papers/g02/20110808/201108081449174683275.gif

    D.http://picflow.koolearn.com/upload/papers/g02/20110808/201108081449174843284.gif

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  • 10函数y=http://picflow.koolearn.com/upload/papers/g02/20110830/20110830143954703874.gif-2sinx的图象是

    A.http://picflow.koolearn.com/upload/papers/g02/20110830/201108301439547181654.gif

    B.http://picflow.koolearn.com/upload/papers/g02/20110830/201108301439547501517.gif

    C.http://picflow.koolearn.com/upload/papers/g02/20110830/201108301439547651630.gif

    D.http://picflow.koolearn.com/upload/papers/g02/20110830/201108301439547651669.gif

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