Listening Quiz: Trình Bày Kế Hoạch Ngăn Ngừa Ô Nhiễm – Medium Level

1. What is the main purpose of Paul and Jessica’s conversation?
2. What does Paul say their plan focuses on?
3. How long will the test take?
4. What will they measure during the test?
5. Why does Paul suggest starting with a small test in one factory?

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