【判断题】联合操作分析的基本原则是人和机器的动作分阶段进行为最佳。
【单选题】The youth continued to gawk at that pretty girl and did not answer.
【单选题】以下属于物理层的非导引型传输媒体的是()。
【单选题】Strange how the habits of his youth clung to him still! (Para. 1)
A.
It was strange that he still wanted to keep the habits of his early days.
B.
It was strange how up to that moment he had continued doing things the way he had always done them from boyhood.
C.
The habits of his early days are so strange that he still wanted to keep them.
【单选题】随着测绘技术的发展,目前工程建设中常用的平面控制测量的方法有