满分5 >
高中数学试题 >
四棱锥P-ABCD底面为正方形,侧面PAD为等边三角形,且侧面PAD⊥底面ABC...
四棱锥P-ABCD底面为正方形,侧面PAD为等边三角形,且侧面PAD⊥底面ABCD,点M在底面正方形ABCD内运动,且满足MP=MC,则点M在正方形ABCD内的轨迹一定是( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304008_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304008_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304008_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304008_ST/images3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304008_ST/images4.png)
考点分析:
相关试题推荐
直线l与平面α相交但不垂直,l在α上的射影为直线a,直线b在α上.则“a⊥b”是“b⊥l”的( )
A.充分非必要条件
B.必要非充分条件
C.非充分非必要条件
D.充要条件
查看答案
若动直线x=a与函数f(x)=sinx和g(x)=cosx的图象分别交于M,N两点,则|MN|的最大值为( )
A.1
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304006_ST/0.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304006_ST/1.png)
D.2
查看答案
已知a>0,函数f(x)=x
3-ax在[1,+∞)上是单调增函数,则a的最大值是( )
A.0
B.1
C.2
D.3
查看答案
在集合
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304004_ST/0.png)
中任取一个元素,所取元素恰好满足方程
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304004_ST/1.png)
的概率是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304004_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304004_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304004_ST/4.png)
D.
查看答案
如图,正方形ABCD中,点E,F分别是DC,BC的中点,那么
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304003_ST/0.png)
=( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304003_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304003_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304003_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024190912482530419/SYS201310241909124825304003_ST/3.png)
D.
查看答案