车辆车轮在轨道上作滚动前进的同时还要作周期性的左右运动。
参考答案:对
__________lessons were not difficult.
A.Our few first short English
B.Our first few short English
C.Our few first English short
D.Few our first English short
完成一个汇编语言用户程序的编制和调试,通常需经过四个步骤:首先用编辑程序编出用户的源程序,然后通过运行汇编程序获得用户的______程序(文件),接着运行连接装配程序,产生用户的______程序(文件),最后通常使用______程序调试运行用户程序。