Qualitative analysis deals with the ( ) of elements, ions, or compounds present in a sample (we may be interested in whether only a given substance is present)(本题5.0分)

Qualitative analysis deals with the ( ) of elements, ions, or compounds present in a sample (we may be interested in whether only a given substance is present)(本题5.0分)
A. A conclusion
B. B identification
C. C discipline
D. D instruction
参考信息: B

9. (单选题) Research programs based on the exploitation of  ( )observations of side effects are of great interest in the discovery of new tracks in as they are based on information about activities observed directly in man and not in animals.(本题5.0分)
A. A clinical
B. B stable
C. C latentiation
D. D natural
参考信息: A

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