1 . 在空间直角坐标系中,设
,
,
,
的中点为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb2d34488e12d9a7177ff5d0c76fe07.png)
_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88eccdc3ded57bcd308a2a91ddf50b38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18672be14d911cbf53b7f9a7c9864e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc82a8174766c42dac2fa3de5f309200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb2d34488e12d9a7177ff5d0c76fe07.png)
您最近一年使用:0次
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2 . 已知空间两点
、
,则
、
两点间的距离为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a524a47c13c889284837f9f3fb8ca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/163436b02bf60d6ab1f98729c20bf4ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
您最近一年使用:0次
2018-04-09更新
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457次组卷
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3卷引用:重庆綦江区2017—2018学年度第一学期期末高中联考高二理科数学试题