1996年11月美国财政部发表的《全球电子商务选择性的税收政策》报告认为，指导电子商务征税的基本原则是（） ["公平原则","适当的税收优惠原则","税收效率原则","中性原则"]
Select valid reasons for IT performance issues that cannot be universally solved by adding more hardware：（） [" adding hardware may exacerbate inefficiency， which can lead to over provisioning and lower utilization"," performance may degrade due to bottlenecks such as database connections that won’t scale in lock step with other dimensions such as computing capacity or memory"," both A and B are valid"," neither A nor B are valid"]
机械密封在检修中可根据密封端面的缺陷更换动环或静环。
成功期望就是与个人的成就动机和个人自我的发展目标相关联的一个概念，它是指个体在一定的成就动机驱动下朝向目标迈进的心理准备状况。（）
A redaction policy was added to the SAL column of the SCOTT.EMP table: All users have their default set of system privileges. For which three situations will data not be redacted?（） [" SYS sessions, regardless of the roles that are set in the session"," SYSTEM sessions, regardless of the roles that are set in the session"," SCOTT sessions, only if the MGR role is set in the session"," SCOTT sessions, only if the MGR role is granted to SCOTT"," SCOTT sessions, because he is the owner of the table"," SYSTEM session, only if the MGR role is set in the sessio"]
情景转变
