满分5 >
高中数学试题 >
已知两点A(1,0),B(1,),O为坐标原点,点C在第二象限,且∠AOC=12...
已知两点A(1,0),B(1,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564006_ST/0.png)
),O为坐标原点,点C在第二象限,且∠AOC=120°,设
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564006_ST/1.png)
,(λ∈R),则λ等于( )
A.-1
B.1
C.-2
D.2
考点分析:
相关试题推荐
已知二项式∈
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564005_ST/0.png)
展开式中,前三项的二项式系数和是56,则展开式中的常数项为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564005_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564005_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564005_ST/3.png)
D.
查看答案
下列说法中,正确的是( )
A.命题“若am
2<bm
2,则a<b”的逆命题是真命题
B.命题“∃x∈R,x
2-x>0”的否定是“∀x∈R,x
2-x≤0”
C.命题“p∨q”为真命题,则命题“p”和命题“q”均为真命题
D.已知x∈R,则“x>1”是“x>2”的充分不必要条件
查看答案
已知集合
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564003_ST/0.png)
,集合B={z
2|z
2=x+y,x,y∈A,且x≠y},则A∩B=( )
A.{1±i,-1±i}
B.{1,0,-1}
C.{1±i,0,-1±i}
D.Φ(空集)
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564002_ST/images0.png)
如图,矩形OABC内的阴影部分是由曲线f(x)=sinx(x∈(0,π))及直线x=a(a∈(0,π))与x轴围成,向矩形OABC内随机投掷一点,若落在阴影部分的概率为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564002_ST/0.png)
,则a的值是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564002_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564002_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564002_ST/3.png)
D.
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564001_ST/images0.png)
某几何体的三视图如图,根据图中标出的尺寸,可得这个几何体的体积为( )
A.12
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564001_ST/0.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123758580256490/SYS201310251237585802564001_ST/1.png)
D.
查看答案