<p style="margin: 0cm 0cm 0pt" class="MsoNormal"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-fareast-font-family: 宋体">活动理论视角下的信息偶遇行为模型研究</span><span lang="EN-US"><font face="Calibri">*</font></span></font>