请示在行文关系上属于（ ）

<span style、"font-family: 宋体;"><span style="font-family: 宋体;"><span style="font-family: 宋体;"><span style="font-family: 宋体;"><span style="font-family: 宋体;">逐级行文</span></span></span> </span></span>

<span style、"font-family: 宋体;"><span style="font-family: 宋体;"><span style="font-family: 宋体;">下行文</span></span></span>

<span style、"font-family: 宋体;"><span style="font-family: 宋体;">平行文</span></span>

<span style、"font-family: 宋体;">上行文</span>