【单选题】铣削宽度较宽而深度不大的台阶宜采用( )。
【单选题】Nobody ____ how to run this machine.
【单选题】The portraits ______ look like them, but I was still unsure of my painting techniques.
【简答题】It was late in the afternoon, and I was putting the final touch on a piece of writing that I was feeling pretty good about. I wanted to save it, but my cursor had frozen. I tried to shut the computer ...
【单选题】Nobody knew _______ a living in that country.