气瓶钢印应符合《（）》附录1的要求，如项目内容齐全，其排列顺序可略有变动。钢印项目中产品标准年号和许可证编号的年号可省略。
参考答案：气瓶安全监察规程
阅读短文，用动词的适当形式填空
It's Sunday. Hundreds of people are in the park. They are men and women, boys and girls. Some
old people walk(散步) along the lake. Some girls (1)__________(play) games under big trees. Some
boys play football over there. Some little babies play in the grass(草坪上). A group of(一群)women
sing and (2)__________(dance). They have a good time after a week of work'and study. Look! There
(3)__________(be) two Americans. They speak English.Two children listen to them. People in the park
(4)__________(be) friends. Can you see the girl? She (5)__________(draw) a picture. It's about the
hill, the lake and the boats. How nice it is!
(一) 镗铣类加工中心在镗、铣床的基础上发展起来的。 问题：
镗铣类加工中心适合什么样零件的加工能进行哪些工序的加工
