设
是两个非零平面向量,则有:
①若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048e833e0c0995d4cf039ed30ba38b56.png)
②若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afe6e32c99da18296d5e13f4547e9834.png)
③若
,则存在实数
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2ace72833d193f011dfb52d94a0c98.png)
④若存在实数
,使得
,则
或
四个命题中真命题的序号为 __________ .(填写所有真命题的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15bd315b801f71bc30b8d772098614.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8e72311ca34443d0dc1d21627fb20d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048e833e0c0995d4cf039ed30ba38b56.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048e833e0c0995d4cf039ed30ba38b56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afe6e32c99da18296d5e13f4547e9834.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afe6e32c99da18296d5e13f4547e9834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2ace72833d193f011dfb52d94a0c98.png)
④若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2ace72833d193f011dfb52d94a0c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56661d8812bc162d6d5b825fc328bc31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf010ec23c886c9fbe5b69e3eb98d13.png)
2019高三·浙江·专题练习 查看更多[1]
(已下线)2019年一轮复习讲练测 第一章测试卷【浙江版】
更新时间:2018-09-15 23:33:20
|
相似题推荐
填空题-单空题
|
适中
(0.65)
【推荐1】给出下列说法:
①“若
,则
”的逆命题是假命题;
②“在
中,
是
的充要条件”是真命题;
③“
”是“直线
与直线
互相垂直”的充要条件;
④命题“若
,则
”的否命题为“若
,则
”.
以上说法正确的是________ (填序号).
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ab5174edcf796e06fc85e28614432f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd62f741b8897536cf616b5774247f6a.png)
②“在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2905b41405398718abd03d8894cf81a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa3638653a94a02420f176d860e294e.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289ce704ab8d876aa9756cf3ae972a2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af716c494fc62f7d7d60ad4aaf6b7e65.png)
④命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da6d82d173ad18cc040e94c925b5ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b051e1329de07b78b173b7980ea8ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629507dcfdeb6866da428c4f45e2b21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6b1fc85c324b4c4defdc8f1012d9ee.png)
以上说法正确的是
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
【推荐2】在正方体
中,M、N、P、Q分别是AB、
、
、
的中点,给出以下四个结论:
;
平面MNPQ;
与PM相交;
与PM异面
其中正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3490f2c22393e71edfbf594f6b3203b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199e46b49066d0f055b0be2c0cf69e48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ba9a4e1665350624ed686c93e223ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bfc9026cc5f63ad3484a7ec13c2a927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911dcf55c8254a0b2e540e50a123c51e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f378e26c2c61deb16782cc320242aac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f37f48de101055cc51a8a85b449ffbdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5636c614db8327aeae2b523a950b1c51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
您最近一年使用:0次