ACCORDING TO THE PASSAGE, THE NUMERICAL VALUE OF THE CONCENTRATION LE...

Question

Câu 49: According to the passage, the numerical value of the concentration level of a substance is onlyuseful if _______.A it is in a localized area B the other substances in the area are knownC it can be calculated quickly D the natural level is also known

Accepted Answer

SECTION A: (8 points) Đáp án mã đề thi A121 1. A 2. A 3. A 4. A 5. A 6. A 7. B 8. D 9. D 10. D 11. B 12. C 13. B 14. B 15. B 16. D 17. A 18. B 19. A 20. B 21. D 22. B 23. D 24. D 25. C 26. D 27. C 28....

ACCORDING TO THE PASSAGE, THE NUMERICAL VALUE OF THE CONCENTRATION LE...

Câu 49: According to the passage, the numerical value of the concentration level of a substance is only

useful if _______.

A it is in a localized area B the other substances in the area are known

C it can be calculated quickly D the natural level is also known

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