题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012850-71889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012850-88322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012851-98053.png)
A.C可能是线段AB的中点 |
B.D可能是线段AB的中点 |
C.C,D可能同时在线段AB上 |
D.C,D不可能同时在线段AB的延长线上 |
答案
解析
所以λ=c,μ=d,代入
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012851-41367.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012851-86853.png)
若C是线段AB的中点,则c=
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012851-46666.png)
若C,D同时在线段AB上,则0≤c≤1,0≤d≤1,代入(1)得c=d=1,此时C和D点重合,与条件矛盾,故C错误.
故选D
核心考点
试题【(2011•山东)设A1,A2,A3,A4是平面直角坐标系中两两不同的四点,若(λ∈R),(μ∈R),且,则称A3,A4调和分割A1,A2,已知点C(c,0),】;主要考察你对平面向量应用举例等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012838-44270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012838-71088.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012838-44270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012838-71088.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012839-17781.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012839-33012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012839-34218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012839-33012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012839-34218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012839-33012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012839-34218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012840-75939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012839-33012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012839-34218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012839-34218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012839-33012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012840-40444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012840-58735.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012840-20720.png)
A.![]() | B.1 | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012823-68268.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012823-24365.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012823-79904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012824-58255.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012824-79990.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012824-64599.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012824-87180.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012825-80809.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012825-57009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012825-70638.png)
A.(0,![]() | B.(![]() ![]() | C.(![]() ![]() | D.(![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012814-10715.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012814-70366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012814-51169.png)
A.一定为锐角三角形 | B.一定为钝角三角形 |
C.一定为直角三角形 | D.可以为任意三角形 |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012800-38027.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012801-63680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012801-49821.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012801-65597.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012801-48262.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012801-98123.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012801-65583.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012801-49104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012801-79215.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012755-86350.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012755-68982.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105012755-34746.png)
最新试题
- 1用12个大小相同的小正方体搭成的几何体如图所示,标有正确小正方体个数的俯视图是[ ]A.B.C.D.
- 2海协会会长陈云林于2008年11月3日抵达台北,开始了他的“双赢之旅”,这是海协会***首次访台。海基会董事长江丙坤欢迎
- 3在做“互成角度的两个共点力的合力”实验时,橡皮筋的一端固定在木板上,用两个弹簧测力计把橡皮筋的另一端拉到某一确定的O点,
- 4下图是果酒和果醋制作的实验流程和某同学设计的果酒和果醋的发酵装置。根据图示回答下列问题:(1)完成图甲中的实验流程。(2
- 5将一个电动传感器接到计算机上,就可以测量变化的力,用这种方法测得的某单摆摆动时悬线上拉力的大小随时间变化的曲线如图所示。
- 6有一个男孩爱发脾气,他的父亲就给了他一袋钉子,并告诉他,每当他发脾气的时候就钉一枚钉子在后院的围篱上。终于有一天这个男孩
- 7(12分)读“二分二至时地球的位置”图,完成下列各题:⑴ 在图中公转轨道上用箭头标出地球的公转方向.⑵ 在地球位于A处时
- 8Of the two, who is _____? [ ]A. old B. the older C. olde
- 9下列各组物质属于同素异形体的是 [ ]A.16O和18O B.金刚石
- 10已知:Rt△ABC中,∠C=90°,D点在AC边的垂直平分线上,CE平分∠ACB,∠A=35°,则∠DCE为[
热门考点
- 1 ( )A.B.C.D.
- 2—Is this_______English car ? — No, it’s______Japanese car.A.
- 3C、CO、CH4、C2H5OH是常用的燃料,他们每1mol分别完全燃烧生成CO2(g)及H2O(l)时,放出的热量依次为
- 4阅读下面的文章,完成后面题目。(22分)花未眠川端康成我常常不可思议地思考一些微不足道的问题。昨日一来到热海的旅馆,旅馆
- 5雅典民主政治的“黄金时代”,包括十将军在内的各级官职都向所有公民开放,并以抽签方式产生。 [ ]
- 6____ knowledge a man has, ____ it is for him to get a good
- 7函数y=1-sinx(x∈R)的最大值是[ ]A、0 B、1 C、2D、3
- 8—Would you like to play tennis with me _________ it doesn’t
- 9They are _____ a great start. [ ]A. to offB. off toC. aw
- 10--- Hey, Mr. Smith, you are wanted on ______ phone. --- Who