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四面体ABCD的外接球球心在CD上,且CD=2,AB=,则外接球面上两点A,B间...
四面体ABCD的外接球球心在CD上,且CD=2,AB=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225226417449703/SYS201311012252264174497010_ST/0.png)
,则外接球面上两点A,B间的球面距离是
.
考点分析:
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