各公司应制定完善的输油管道安全技术操作规程和(),并严格执行。同时应配备便携式(),并按标准要求进行校验。
参考答案:《作业指导书》、可燃气体检测仪
根据句意和首字母提示每空填一个单词,使句意完整。
1. This is my s________ Ann.
2. What's that in E________?
3. A________ these your brothers?
4. Jack h________ a TV.
5. Let's play s________.
6. My sister and I like p________ tennis.
7. How m________ are these shoes? Twenty yuan.
8. Please have a l________ at this shop.
9. My ball is on the f________ under the table.
10. Do you n________ bags for school?
一个齿轮的模数变化后,齿形系数YF也将发生变化。