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1、Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.1.已知：两异面直线a,b所成的角是50 ， P为空间中一定(动)点，则过点P且与a,b都成30角的直线有 条。abPO2Evaluatio
2、n only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.2.平行于同一平面的二直线的位置关系是 （ ）（A） 一定平行（B） 平行或相交（C） 相交（D） 平行，相交，异面DEvaluation only.Eval
3、uation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.3.点A是平面外的一点，过A和平面平行的直线有 条。A无数Evaluation only.Evaluation only. Created with Aspose.Slides f
4、or .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.4.点A是直线l 外的一点，过A和直线l 平行的平面有 个。A无数Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Cr
5、eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.5.过两条平行线中的一条和另一条平行的平面有 个。无数Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Clien
6、t Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.6.过两条异面直线中的一条和另一条平行的平面有 个。且仅有一Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 A
7、spose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.7.如果l1 / l2 , l1 平行于平面，则l2 平面l1l2l2 或 /Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-20
8、11 Aspose Pty Ltd.8.如果两直线a ,b 相交，a平行于平面，则b与平面的位置关系是 。abb相交或平行 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.9.过直线 l
9、外两点 ，作与直线 l平行的平面，这样的平面 （ ）（A） 有无数个（C） 只能作出一个（B） 不能作出（D） 以上都有可能AB l A Bl ABlDEvaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pt
10、y Ltd.10.四面体ABCD中，面ADC面BCD，面ABD 面BCD，设DE是BC边上的高， 求证： 平面ADE 面ABC ABCED面ADC面BCD面ABD 面BCDAD 面BCDAD BC DE BC BC 面ADE 面ABC 面ADE 线面垂直面面垂直线线垂直Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyr
11、ight 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.11.斜三棱柱ABC-ABC的侧面BBCC的面积为S，AA到此侧面的距离是a，求此三棱柱的体积？ABCABCEvaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 A
12、spose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.ABCABC11.斜三棱柱ABC-ABC的侧面BBCC的面积为S，AA到此侧面的距离是a，求此三棱柱的体积？Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Co
13、pyright 2004-2011 Aspose Pty Ltd.12.在正四棱锥内有一个内接正方体，这正方体的四个顶点在四棱锥的侧棱上，另四个顶点在棱锥底面上，若棱锥底面边长为a,高为h，求内接正方体的棱长？ABDC OPHEF设内接正方体的棱长为xEvaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004
14、-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.13.求正方体的内切球和它的外接球的表面积之比.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspos
15、e Pty Ltd.14.求正四面体的内切球和它的外接球的体积之比.DABCHOEvaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.15.半球的半径为R，一正方体的四个顶点在半球的底面上，另四
16、个顶点在球面上，求正方体的棱长. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.则截球得大圆，截正四棱锥得 PAC，且 PAC 内接于圆 O，如图所示16.求棱长为 a 的正四棱锥的外接球的体积。PACO过正四棱锥
