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  • 形状公差一般用于( )要素。
  • 量具是以( )复现量值的计量工具,一般结构简单,没有传动放大系统。
  • 线对线垂直度公差带形状为( )
  • 基本偏差为j--zc的轴与H孔可构成( )配合。
  • 与标准件相配合是应选用( )。
  • 基孔制配合中孔的( )为零。
  • 普通螺纹的螺纹尺寸应标注在( )
  • 根据俯视图,选择正确的局部剖主视图( )
  • 已知主、俯视图,选择正确的左视图( )
  • 若调用一个函数,且此函数中没有return语句,则正确的说法是:该函数( )。
  • There ______ an English speech competition in our school this weekend.
  • ---What can 1 do for you, madam? ---______.
  • Your explanation _____ reasonable, but I still can't believe you.
  • — What are they______about over there? — They _____ the sports meeting to be held next week.
  • She is the best singer in my class. No one else____ so well.
  • The volunteers sent _____ books to a mountain village school on Children's Day.
  • Doing morning exercise every day will make you _____
  • The box is so heavy _____ no one can carry it.
  • C语言中字符型(char)数据在内存中的存储的是( )。
  • 星形连接时三相电源的公共点叫三相电源的( )