机器设备的三种贬值是什么？
You work as a database administrator for Certkiller .com. You want to create a new optimized database for your transactional production environment to be used by a financial application. While creating the database， you want the Oracle Software to take care of all basic settings to optimize the database performance. Which method would you use to achieve this objective？（） A。 B。 C。 D。 E。
完工（竣工）验收可分两阶段进行，即先进行（），再进行完工（竣工）验收 总工程验收。 地区项目验收。 分项验收。 技术性初步验收。
表面粗糙度参数
Which three statements are true about Automatic Workload Repository (AWR)?（） All AWR tables belong to the SYSTEM schema.。 The AWR data is stored in memory and in the database.。 The snapshots collected by AWR are used by the self-tuning components in the database。 AWR computes time model statistics based on time usage for activities, which are displayed in the v$SYS time model and V$SESS_TIME_MODEL views.。 AWR contains system wide tracing and logging information.。
对涉及结构安全、节能、环境保护和主要使用功能的试块、试件及材料，应在进场时或施工中按规定进行（）。
