问题
多项选择题
杜邦工艺停车后，终缩聚釜的后处理措施有（）。
A、系统TEG蒸煮清洗
B、系统降温
C、停运搅拌器
D、保留一定液位
答案
参考答案：A, B, C
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杜邦工艺停车后，终缩聚釜的后处理措施有（）。
A、系统TEG蒸煮清洗
B、系统降温
C、停运搅拌器
D、保留一定液位
参考答案：A, B, C
| 用方框中所给词的适当形式填空，将答案写在下面的横线上。 | |
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| It was the early autumn of my first year at a junior high school, and my old school was far away. As a result, no one 1. who I was. I was very 2. , and afraid 3. friends with anyone. Every time I heard the other students 4. and 5. , I felt my heart 6. . I couldn't7. to anyone about my problem, and I didn't want my parents 8. about me. It doesn't matter because all the dark days 9. . Now I believe that the world is what you think it is. If you think you are 10. , you might always be happy. So please smile at the world and it will smile back. |