A global manufacturer of automobile parts wants to implement specialized voice applications to increase productivity and reduce the cost of overseas toll calls. Which Cisco solution best matches this business need?（） ["Digital subscriber line (DSL)","Optical network","Wireless local-area network (WLAN)","Internet Protocol (IP) telephony"]
在Excel工作表中，有关数据清单的分类汇总，叙述正确的是（）。 ["分类汇总只能对“分类字段”进行分类求和","在进行分类汇总前不需对数据清单按“分类字段”进行排序","要取消分类汇总的分级显示结果，选择“数据”菜单下的“分类汇总”菜单，在“分类汇总”对话框中，选择“全部删除”按钮。","在分类汇总前对数据清单按任意关键字进行排序即可"]
电喷发动机怠速空气调整器是通过控制（）的方式来实现怠速调整的。 ["节气门开度大小","进气歧管真空度","阻风门开度大小","节气门旁通道截面积"]
工作坐标系的原点称（）。 ["工件零点","工作原点","机械原点","空间零点"]
What is the maximum number of wlan controllers that can join a single mobility group？（） ["48","36","12","24"]
认为文学艺术是人的性意识升华的产物的人是（）。
