【简答题】用括号内所给词的适当形式填空。 1. There are (nine) floors in the building, and I live on the (twelve) floor. 2. Do you know how (ask) for information politely? 3. Would you please (lend) me some (write) paper? 4...
【简答题】用括号内所给词的适当形式填空 1. He can sing English songs (wonderful). 2. Notre Dame Cathedral is one of the most famous (church). 3. We consider (discuss) the questions at the meeting. 4. As we know, the train sta...
【单选题】在三面投影体系中,侧垂面在( )投影面上的投影积聚为直线。
【单选题】( )不是等离子弧焊残余应力产生的原因。