file:中石油视频未来.pptx file:协作产品竞争及卖点.pptx file:思科协作构架体系.pptx file:思科协作产品整体架构_both.pptx file:视频会议串讲.pptx file:石油统一协作云解决方案.pptx file:风暴来袭-思科全新协作终端发布v2 Partner 2014.04.pptx file:电力行业新产品推广.pptx file:SEVT-SY（曹鹏经典）.pptx