Listening Quiz: Quy Trình Kiểm Tra Van An Toàn Áp Suất – Easy Level

1. What are Anna and John mainly discussing?
2. What tool does Anna say to use to check the pressure?
3. What should the valve do during the test?
4. What can be inferred if the valve does not open during the test?
5. When can the valve be installed?

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