焊接过程中，焊条沿焊接方向向前移动，焊条移动的速度越大，焊缝余高越大。( )
参考答案：错
选择合适的单词填空。
for in us on go
1. Let lean the room.
2. It's time school.
3. What is _____ your bag?
4. Let's to school.
5. The TV room is the first floor.
Ampelography指的是什么？
