【判断题】【消耗次数:1】
螺旋扫描时,螺距可以大于截面的尺寸。
正确
错误
参考答案:
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相关题目
【判断题】 扫描截面的轮廓尺寸不能过大,否则可能导致扫描特征的交叉情况。
①  正确
②  错误
【填空题】 扫描截面的轮廓尺寸不能[填空(1)],否则可能导致扫描特征的[填空(2)]情况。
【判断题】 创建可变截面扫描特征时,截面必须和所有一般轨迹产生约束或者尺寸关系。
①  正确
②  错误
【填空题】 [填空(1)]是扫描特征的可选参数,利用[填空(2)]可以建立变截面的扫描特征
【单选题】 通过螺旋扫描命令不可以创建( )特征。
①  实体特征
②  薄壁特征
③  剪切材料
④  工程图
【单选题】 使用螺旋扫描创建压缩弹簧时需要创建( )段轨迹。
①  3
②  4
③  5
④  6
【单选题】 使用引导线的扫描,以最短的引导线或扫描路径为准,为了便于对截面的控制,引导线应该比扫描路径()。
① 
② 
【单选题】 在创建扫描曲面时,如果在扫描特征用户操作界面中选择【选项】命令,再弹出【选项】对话框中选择()选项可以创建变截面扫描曲面。
①  【可变剖面】
②  【恒定剖面】
③  【剖面】
④  以上都不正确
【判断题】 创建扫描特征时,扫描的轨迹可以相交,也可以开放,也可以是闭合的。
①  正确
②  错误
【判断题】 螺旋扫描必须要草绘中心线作为轴线。
①  正确
②  错误
随机题目
【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
【单选题】 There are many children()behaviour is generally unacceptable.
①  who
②  whom
③  whose
④  that
【单选题】 Happy New Year to you. ____________
①  The same to you.
②  Yes, I am happy.
③  What about you.
④  Very well, thanks.
【单选题】 She was so _____ in her job that she didn’t hear someone knocking at the door.
①  attracted
②  drawn
③  absorbed
④  concentrated
【单选题】 A good public speaker can _______ the audience (听众)at the very beginning.
①  convey
②  portray
③  exaggerate
④  hook
【单选题】 How was your trip to London, Jane?________
①  Oh, wonderful indeed.
②  I went there alone.
③  The guide showed me the way.
④  By plane and by bus.
【单选题】 Every means _______ been tried to solve the difficult problem.
①  has
②  have
③  is
④  are
【单选题】 the newcomers found it impossible to ____ themselves to the climate sufficiently to makepermanent homes in the new country.
①  suit
②  adapt
③  regulate
④  coordinate
【单选题】 Why not go and have dinner in a restaurant? ____________ It’s too expensive.
①  Why not?
②  I agree.
③  I am afraid not.
④  I’m sure.
【单选题】 Please write a report()the above subjects are to be covered.
①  which
②  in which
③  that
④  in that