题目内容
.给出下面类比推理命题(
为实数集,
为复数集,
为向量集),其中类比结论正确的是
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182342326310.png)
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182342342319.png)
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182342358405.png)
A.由“若![]() ![]() ![]() ![]() |
B.由“若![]() ![]() ![]() ![]() ![]() ![]() |
C.“若![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
D.“若![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
B
本题考查类比推理.
令
则
,所以
,A错;
“若
,且
,则
”;B正确.
令
,则
,故C错;
若
,则
,故D错
综上,正确答案为B
令
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182343044371.png)
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182343060791.png)
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182343075475.png)
“若
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182342498651.png)
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182342638496.png)
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182342685428.png)
令
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182343138488.png)
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182343169522.png)
若
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182343184705.png)
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823182343200447.png)
综上,正确答案为B
![](http://thumb.zyjl.cn/images/loading.gif)
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