维也纳体系下的诸矛盾中，最核心的是（）。 ["工业资产阶级和封建专制之间的矛盾","广大人民同统治者之间的矛盾","被压迫民族和大国压迫者之间的矛盾","大国之间争夺欧洲利益的矛盾"]
下列关于最低折旧年限的规定正确的是（）。 ["房屋、建筑物为10年","火车、轮船为10年","机器、机械为10年","与生产经营有关部门的器具、工具、家具为5年"]
Consider the following scenario for your database: - Backup optimization is enabled in RMAN. - The recovery window is set to 7 days in RMAN. - The most recent backup to disk for the TOOLS tablespace was taken on November 3, 2007. - The TOOLS tablespace is read-only since November 4, 2007. On November 23, 2007, you issue the RMAN command to back up the database to disk. Which statement is true regarding the backup of the TOOLS tablespace?（） [" The RMAN backup fails because the TOOLS tablespace is read-only"," The RMAN skips the backup of the tablespace because backup optimization is enabled"," The RMAN makes backup because optimization can be enabled only for backups to disk"," The RMAN makes the backup because no backup of the tablespace exists within the seven day window"]
公开密钥加密也称（） ["非对称加密","对称加密","散列编码","私有密钥加密"]
A customer currently buys HP ProLiant servers and EMC storage. The customer has encountered various problems getting certain servers to work with their storage. Which of the following arguments can the Sales Specialist present to best position IBM？ （） ["IBM’s ServerProven program is a reference that assures a customer of compatibility with specific third-party products.","IBM sells other vendors’ products and will test compatibility with the customer’s products. ","B IBM’s storage division regularly tests their products with other vendors’ server products. ","IBM’s server division regularly tests their products with other vendors’ storage products."]
我国农业税制改革的实施步骤是？
