单项选择题

风险的大小可以用风险评价矩阵，也称（）矩阵。
A、概率——影响
B、概率——稳定
C、稳定——波动
D、波动——跳跃

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单项选择题

A. 对 B. 错

多项选择题

Which of the following are normally included in the cover letter for a submitted manuscript?

A． Thesis title
B． Journal's name
C． Statement of Originality
D． Introduction to the study
E． Conflict of interest statement