【判断题】车削加工特别适合加工具有同一回转轴线的回转体类零件。
【单选题】Bob thought he couldn’t go to the party because he had too much homework, but persuaded by his friends, he went _________.
【简答题】Bob comes out of the station and at once he doesn't know where to go. He comes to see his good friend, Peter. Peter is a worker. He works in a factory, but Bob doesn't know where the factory is. He wa...
【简答题】打开对齐面板的快捷键为________。