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  • The book store is far away from here. You'd better_______.
  • Chinese people believe that our country will become_______.
  • The boy _____ won the gold medal comes from a small town in Hubei.
  • Some people find _____ difficult to give up smoking, but they try their best to do it.
  • Your watch is so nice! When did you buy it? — In April. I _____ it for two months.
  • — What _____ you do last night? — I _____ a movie with my friend.
  • The writer was disappointed at the result of his _____ book.
  • In our school, there are two teachers from _____ . One of them teaches us _____ .
  • C语言中的简单数据类型包括( )。
  • 工件采用( )定位,有利于增大摩擦力。
  • 工件采用心轴定位时,定位基准面是( )。
  • 定位心轴能限制工件的( )自由度。
  • 刀具切削部分的常用材料中,耐热性最好的是( )。
  • 一紧固螺钉在使用过程中发现有塑性变形,是因为螺钉材料的力学性能( )值不足。
  • 调质钢的热处理工艺常采用( )。
  • 下列各项中,标点符号使用正确的一项是( )。
  • 工厂车间中,常用与( )相比较的方法来检验零件的表面粗糙度
  • 端面全跳动的公差带与平面对轴线的( )公差带相同。
  • 现行国家标准中共有( )个标准公差等级。
  • 孔与轴同字母的( )相对于零线呈对称分布。