【单选题】【消耗次数:1】
同类型机床按其加工精度的不同又可分为普通精度机床、精密机床和高精度机床,该说法( )
正确
错误
参考答案:
复制
纠错
相关题目
【单选题】 同类型机床按其工艺范围可分为( )
①  通用机床
②  普通机床
③  专门化机床
④  以上ABC选项都正确
【单选题】 闭环控制的数控机床的加工精度主要取决于检测系统的精度。该说法( )
①  正确
②  错误
【判断题】 位置伺服控制系统的位置精度在很大程度上决定了数控机床的加工精度。该说法( )
①  正确
②  错误
【判断题】 推力轴承置于主轴后端用于轴向精度要求高的精密机床。()
①  正确
②  错误
【判断题】 机床的传动链误差不会影响滚齿加工精度。
①  正确
②  错误
【单选题】 在闭环数控系统中,机床的定位精度主要取决于( )的精度。
①  转换电路
②  检测装置
③  控制系统
④  机床本身
【判断题】 数控机床的主轴组件具有较大的刚度和较高的精度。该说法( )
①  正确
②  错误
【判断题】 由于数控机床按照预定的程序自动加工,不受人为因素的影响,其加工精度由机床保证,还可以利用软件来校正和补偿误差。该说法( )
①  正确
②  错误
【判断题】 数控机床通常都具有较高的可靠性和精度保持性,以充分体现数控加工的特点。该说法( )
①  正确
②  错误
【判断题】 通常数控机床进给系统的直线位移精度达微米级,角位移达毫秒级。该说法( )
①  正确
②  错误
随机题目
【单选题】 1.Gates open at 10.30am and _______ is free.
①  admission
②  admit
③  admitting
④  admitted
【单选题】 4. The body can’t storevitamin C. So it is_________ to have a fresh supply every day.
①  essential
②  visible
③  ultimate
④  profound
【单选题】 8.Do you have any idea what he meant? I really can’t ______ what he said at this morning’s meeting.
①  figure on
②  figure out
③  find out
④  find
【单选题】 7. The fall in price is directly ______ to the increase in output.
①  concerned
②  connected
③  related
④  united
【单选题】 4. What made him revert______ his habit of smoking?
①  back
②  to
③  away from
④  on
【单选题】 10.We should see ourselves as part of nature rather than in ______ with it.
①  argument
②  connection
③  conflict
④  crash
【单选题】 14.Anyone can borrow magazines from the club ______ he returns them in a week.
①  as long as
②  so that
③  unless
④  as far as
【单选题】 9. They have ______ each other for a long time.
①  corresponded on
②  corresponded with
③  communicated with
④  kept writing
【单选题】 6.The old lady fainted on the street and found herself in the first aid room when she came_________.
①  across
②  over
③  in
④  to
【单选题】 In Britain, the season of the year is probably _____ spring.
①  later
②  last
③  latter
④  late