【判断题】【消耗次数:1】
投影面积小于原投影面的性质称为平面的收缩性。( )
正确
错误
参考答案:
复制
纠错
相关题目
【单选题】 平行于一个投影面,垂直于另两个投影面的平面,称为投影面()。
①  垂直面
②  平行面
③  侧垂面
④  正立面
【单选题】 平行于一个投影面倾斜于其他投影面的直线称为_____
①  投影面平行线
②  投影面垂直线
③  一般位置直线
【单选题】 垂直于投影面的直线称为_____
①  投影面平行线
②  投影面垂直线
③  一般位置直线
【判断题】 平行于一个投影面,垂直于另两个投影面的平面称为投影面平行面。
①  正确
②  错误
【单选题】 屋面的坡面面积=水平投影面积×()
①  隅延尺系数
②  延尺系数
③  坡度
④  起坡角度
【单选题】 平行于一个投影面,倾斜于另两个投影面的直线,称为( )。
①  投影面平行线
②  投影面垂直线
③  一般位置直线
④  不能确定
【判断题】 平行于投影面的直线,在该投影面上有积聚性
①  正确
②  错误
【单选题】 垂直于某一投影面的直线,称为( )。
①  不能确定
②  投影面平行线
③  一般位置直线
④  投影面垂直线
【单选题】 平面内对投影面的最大斜度线与平面内的该投影面的平行线两者的关系是( )。
①  平行
②  相交
③  不能确定
④  垂直
【单选题】 当线段或平面平行于投影面时,其线段的投影长度反映线段的实长,平面的投影与原平面图形全等,这种性质称为正投影的( )。
①  同素性
②  全等性
③  定比性
④  从属性
随机题目
【判断题】 The population of beijing is larger than of nanjing.
①  正确
②  错误
【判断题】 We should buy any meat, because there are little left.
①  正确
②  错误
【判断题】 He was very foolish that he didnt pass such an easy exam.
①  正确
②  错误
【判断题】 The students were running on the playground as fast as they can.
①  正确
②  错误
【单选题】 I think you’ve got to the point ___ a change is needed, otherwise you’ll fail.
①  when
②  that
③  where
④  which
【单选题】 They _ on the programme for almost one week before I joined them, and now we on it as no good results have come out so far.
①  had been working; are still working
②  had worked; were still working
③  have worked; were still working
④  have worked; are still working
【单选题】 Many people who had seen the film were afraid to go to the forest when they remembered the scenes ___ people were eaten by the tiger.
①  that
②  by which
③  which
④  in which
【单选题】 A candidate for the democratic presidential nomination ______ at this moment.
①  is interviewing
②  being interviewed D. Interviewing
③  is being interviewed
④  Interviewing
【单选题】 ___ is often the case, we have worked out the production plan.
①  Which
②  When
③  What
④  As
【单选题】 There are many people ___ only on-line activity is sending and receiving e-mails.
①  who
②  that
③  which
④  whose