Listening Quiz: Lựa Chọn Cấp Áp Suất Phù Hợp Cho Hệ Thống Đường Ống – Easy Level

1. What are Anna and Paul mainly discussing?
2. What is the maximum pressure in the system during operation?
3. Which pressure class does Anna think will be safe?
4. Why does Paul say Class 3000 is a good choice?
5. What does Anna say she will do after choosing the class?

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