问题
问答题 简答题
加热炉烘炉应注意什么？
答案
参考答案：
（1）注意炉温上升情况，防止升温过度；
（2）注意观察炉子各部砌体的变化情况；
（3）注意调节烟道闸门，使炉膛具有适当压力；
（4）烘炉过程要做好记录备查；
（5）不得超温，防止炉管烧坏，管内吹一定蒸汽。
搜题请搜索小程序“爱下问搜题”
加热炉烘炉应注意什么？
参考答案：
（1）注意炉温上升情况，防止升温过度；
（2）注意观察炉子各部砌体的变化情况；
（3）注意调节烟道闸门，使炉膛具有适当压力；
（4）烘炉过程要做好记录备查；
（5）不得超温，防止炉管烧坏，管内吹一定蒸汽。
| 阅读下面短文， 从各题所给的四个选项中选出最佳答案。 | ||||
| Ben and his classmates are watching a DVD about the environment. A long time ago, most towns and villages were very small. The number of people 1 lived in every country was much smaller than it is today, too. There was 2 heavy industry. People did not use chemicals. There were no motor vehicles and there were no factories. So there was very 3 pollution. Sadly, our environment is much dirtier than 4 was in the past. This is a 5 because the best way for us to be healthy is to live in a clean environment. The air and water are much dirtier than they 6 be. The chemical factories and cars 7 terrible gas. The water 8 with chemicals from the factories and ships. This means we are destroying our home little by little. In the DVD we will try to find ways to 9 our environment cleaner and find ways to stop future pollution. We hope you will learn 10 you can help make the world a cleaner and healthier place. | ||||
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