下列各项属于会计政策变更的有（）。 ["固定资产折旧方法的变更","收入确认方法由完成合同法改为完工百分比法","投资性房地产的后续计量由成本模式改为公允价值计量模式","坏账准备计提方法由应收账款余额百分比法改为账龄分析法","因首次执行新准则所得税的核算方法由应付税款法改为资产负债表债务法"]
公共事业管理最突出的特征是（）或（）。
急转弯时，拉动或推送（）应两手交叉轮流动作，以加速转弯动作。 ["操纵杆","方向盘","控制器","转向器"]
在现代社会中，各个不同政治制度的国家，其教育目的制定首先适应它的（） ["政治制度","科技水平","经济基础","文化传统"]
Which of the following is a true statement when promiscuous mode is enabled on an Integrated Virtual Ethernet？（） [" The physical port can be used as part of a Shared Ethernet Adapter （SEA）."," All physical ports on the Host Ethernet Adapter （HEA） default to promiscuous mode."," Multiple logical ports can be assigned to a physical port if that logical port is in promiscuous mode."," All physical ports that belong to the same port group will be set to promiscuous mode on the Host Ethernet Adapter （HEA）."]
简述AES的子密钥生成过程。
