Listening Quiz: Kiểm Soát Phát Thải VOC Cho Quy Trình Dựa Trên Dung Môi Mới – Medium Level

1. What is the main topic of the conversation?
2. Which control method does Anna say is cheaper and suitable for lower VOC levels?
3. How often should the equipment be tested?
4. What can be inferred about Anna’s role in the conversation?
5. What will John most likely do next?

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