在Linux文件权限中，'-rw-r--r--'表示的文件权限是？

某研究团队在攻克技术难题时，成员间因学术观点冲突产生激烈争论，最终通过建立新的数学模型达成共识。这最能说明非理性因素的：

在一个有127个元素的顺序表中插入一个新元素并保持原来顺序不变，平均要移动多少个元素？

在数据库中，什么是主键？

Despite the extensive research conducted on the topic, a consensus among experts remains elusive, primarily due to the inherent subjectivity in interpreting the available data. This illustrates a fundamental challenge in scientific inquiry, where conclusions can often be influenced by the researchers’ own _____ and biases, even when attempting to remain objective.