下列四个命题:
①样本相关系数r越大,线性相关关系越强;
②回归直线就是散点图中经过样本数据点最多的那条直线;
③设
是不同的直线,
是不同的平面,若
∥
,且
,
则
∥
且
∥
;
④若直线
不垂直于平面
,则直线
不可能垂直于平面
内的无数条直线.
其中正确命题的序号为
①样本相关系数r越大,线性相关关系越强;
②回归直线就是散点图中经过样本数据点最多的那条直线;
③设
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/6f76625f7891461594cab492e98560d3.png)
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/51187429bb184c8faebbe9375e8015aa.png)
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/e918659909ff41f09f1964f3d1268fd2.png)
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/50efb111160546b8afbbd771fb253724.png)
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/a7ab2de4a38046aba3e0f3ba2df0f56a.png)
则
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/70a5522db47a416987ecec1f392be2de.png)
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/1d65d55792f84675b7c1a1bb75b8caec.png)
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/70a5522db47a416987ecec1f392be2de.png)
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/8479772fca5149bf889a7cb9174b5546.png)
④若直线
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/50efb111160546b8afbbd771fb253724.png)
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/1d65d55792f84675b7c1a1bb75b8caec.png)
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/50efb111160546b8afbbd771fb253724.png)
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572483885539328/1572483890921472/STEM/1d65d55792f84675b7c1a1bb75b8caec.png)
其中正确命题的序号为
A.①②③ | B.①③ | C.①②④ | D.③ |
更新时间:2016-12-04 02:09:34
|
【知识点】 平行公理
相似题推荐
单选题
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较易
(0.85)
【推荐1】已知
是平面,
、
是直线,且
,
平面
,则
与平面
的位置关系是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72fbc714c63815dad9a27418f6492f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d5240f8aed282883ca120c6e80d200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() ![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】已知m、n是两条不同的直线,α、β是两个不同的平面,给出下列命题:
①若
,
,则
;②若
,
,且
,则
;③若
,
,则
; ④若
,
,且
,则
.其中正确命题的序号是
①若
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/dc2d030eaa8c473fa62f2b21a4c0c218.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/3bed9646ec104a628e333fb571a67072.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/2fa8a3df6d8c4e1aa958cf9367824686.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/d9b070668efe4c77ae687e17094be531.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/7d11f3277688432db48968a4acf7d7a2.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/2a387142ae78416f96ce461fe3a60fb1.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/f8d563f51b224a2cb354dd646634b242.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/e78ef009eb4243cf8b9d79caa5ca65c2.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/3bed9646ec104a628e333fb571a67072.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/b0e9938bceab47b2a00bd0ed2858b561.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/3bed9646ec104a628e333fb571a67072.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/ef7f81757bc348d8a9de7ba69fd66952.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/d7f090d9514847f08071cf75c78e00a4.png)
![](https://img.xkw.com/dksih/QBM/2014/2/20/1571515055620096/1571515061067776/STEM/4d7ac08937534cae8df3c2b21fee9227.png)
A.①④ | B.②③ | C.②④ | D.①③ |
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