原始文献
参考答案：
原始文献指首次发现该种动植物，描述其特征，予以初次定名的文献。
All of the following are components of the Code of Ethics EXCEPT:（）
A. striving to maintain and improve their competence and the competence of others in the profession.
B. demonstrating diligence, independence, and thoroughness when preparing investment reports.
C. acting with integrity, competence, respect, and in an ethical manner when dealing with others.
设A是三阶矩阵，|A-E|=0，(2A-E)x=0有非零解，3A+E是不可逆矩阵，则
