题目内容

下列有关偶然误差的叙述是否有不正确的()

A. 偶然误差具有随机性
B. 偶然误差的数值大小、正负出现的机会是均等的
C. 偶然误差在分析中是不可避免的
D. 偶然误差是由一些不确定的偶然因素造成的
E. 以上叙述没有正确的

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