【单选题】【消耗次数:1】
在投影图上,如果两直线有两同面投影,而交点的连线不垂直于相应的投影轴,则两直线的关系是( )。
相交
不能确定
垂直
平行
参考答案:
复制
纠错
相关题目
【单选题】 如果两直线在某一投影面上的投影互相垂直,而且其中有一条直线平行于该投影面,则两直线在空间位置的关系是( )。
①  不能确定
②  相交
③  平行
④  垂直
【单选题】 既不平行也不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】 若两直线的三组同面投影都平行,则两直线在空间为平行关系。
①  正确
②  错误
【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
【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
【判断题】 点的V面投影和H面投影的连线垂直于OX轴。
①  正确
②  错误
【判断题】 2. 若两直线的三组同面投影都平行,则两直线在空间为平行关系。( )
①  正确
②  错误
【判断题】 2. 若两直线的三组同面投影都平行,则两直线在空间为平行关系。
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
【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
随机题目
【单选题】 _______ these honours he received a sum of money.
①  Besides
②  Outside
③  But
④  Except
【单选题】 He didn’t ______ to cause so much unhappiness.
①  extend
②  attend
③  intend
④  tend
【单选题】 The man told me that by the end of the week he _______ away from his hometown for 20 years.
①  has been
②  will have been
③  is to be
④  would have been
【单选题】 Although he did not know London well, he made his way ______ to the airport.
①  easy enough
②  enough
③  easily enough
④  enough easily
【单选题】 The world is trying every means to _____the friendship between the two countries.
①  raise
②  promote
③  arise
④  protest
【单选题】 One rainy night the policeman had a chance _____ with a gang of smugglers.
①  acquaintance
②  encounter
③  account
④  interview
【单选题】 Let’s make it round 9 o’clock.____________
①  No. I think so.
②  I am proud of you!
③  It’s impossible.
④  Would some time later be convenient?
【单选题】 After driving for thirty miles, she suddenly realized that she ()in the wrong direction.
①  was driving
②  has been driving
③  had been driving
④  drove
【单选题】 I am not sure whether I can gain any profit from the investment, so I can’t make a(n) ____ tohelp you.
①  exact
②  defined
③  definite
④  sure
【单选题】 It was a(n) _______ achievement ― no one has ever won the championship five times before.
①  single
②  unique
③  only
④  sole