风管安装的过程中，加工下料时，工作台上应铺橡胶板，画线应使用金属划针。( )
参考答案：错
选词填空。
1. Everyone _______ tired and hungry.
2. I see some children _______kites.
3. I want to buy _______ for my family.
4. The buses and big trucks go _______.
5. There _______many people in the Beijing Train Station.
压器是利用（）感应原理把交流电能由某一种电压转变到另一种不同电压的静止电器。
