You are working on a 24x7 （available 24 hours per day， 7 days per week） production database. An operating system （OS） user deletes the alert log file accidentally. Which statement in this scenario is true？（） The database crashes.。 The DBA needs to re-create the file.。 The file gets re-created automatically.。 The file gets restored automatically from the last backup.。 The DBA needs to perform a complete database recovery.。 The DBA needs to perform an incomplete database recovery.。
施工方案的拟定应与企业经营理念合理结合，落实经营思想的措施。以下哪个措施不属于正确的做法（） A.自建轧石场，生产路面基层底基层适用的碎石。 。 B.充分利用隧道、路堑开挖石方。优质石料加工后，堆放在适当位臵用于砌石工程，稍次者用于桥涵基坑垫层、路堤填筑等。 。 C.符合标书基础上，水泥混凝土、沥青混凝土尽可能外购商品料。 。 D.路基清表工序实施前，规划好表层耕植土推积、储放办法，工程竣工后，用于临时用地的复耕。。
From the V$SESSION_LONGOPS view， you find that some of the database users have long-running queries that consume a lot of CPU time. This causes performance problems for other users in the database， who have much shorter queries. You would like to make sure that the users with large queries do not use all the CPU time， but you still do not want to terminate them with an error message. Which method would you follow to achieve this？（） set the CPU time per call in the users profile。 set the CPU time per session in the users profiles。 set the TIMED_STATISTICS parameter to TRUE in the parameter file。 set the CPU levels for the users’ group using Resource Manager。
用人单位的社会保险登记事项发生变更或者用人单位依法终止的，应当自变更或者终止之日起三十日内，到社会保险经办机构办理变更或者注销社会保险登记。
原油及污水处理系统的地漏全都排到（） 开式排放系统。 闭式排放系统。 排在主甲板上。
大体积混凝土常用的外加剂是（）。
