[单选]
Examine the following command:
SQL> ALTER TABLE booking SHRINK SPACE COMPACT;
Which activity is performed when the preceding command is executed?（）

A . The shrink operation touches every block in the BOOKING table
B . The high-water mark (HWM) for the BOOKING table is shifted from its original position
C . The progress of the shrink operation is saved in the bitmap blocks of the BOOKING table
D . The data manipulation language (DML) triggers on the BOOKING table are executed because the shrink operation is internally handled by the INSERT/DELETE operatio

税法构成要素，又称课税要素，它的基本涵义包括（）。税法要素包括实体性的。税法要素包括程序性的。税法要素是所有完善的单行税法都共同具备的。仅为某一税法所单独具有而非普遍性的内容，不构成税法要素。 You want to disable resumable space allocation for all sessions.Which value should be assigned to the RESUMABLE_TIMEOUT parameter to disable resumable space allocation for all sessions？（） 0。 10。 100。 NULL。 In which situation are you NOT required to perform an incomplete recovery？（） when all the control files are lost。 when all the members of a redo log group are lost。 when a table is dropped and purged from the Recycle Bin。 when a temporary file of the default temporary tablespace is lost。以下关于物流产业的说法错误的是（）物流产业是单一行业。物流产业是基础产业。物流产业是服务业。物流产业是综合性产业。工程具备竣工验收条件的，项目法人应当提出竣工验收申请，经法人验收监督管理机关审查后报竣工验收主持单位。竣工验收主持单位应当自收到竣工验收申请之日起（）个工作日内决定是否同意进行竣工验收。 20。 30。 45。 90。

Examine the following command:
SQL> ALTER TABLE booking SHRINK SPACE COMPACT;
Which activity is performed when the preceding command is executed?（）

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[单选] Examine the following command: SQL> ALTER TABLE booking SHRINK SPACE COMPACT; Which activity is performed when the preceding command is executed?（）

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[单选]
Examine the following command:
SQL> ALTER TABLE booking SHRINK SPACE COMPACT;
Which activity is performed when the preceding command is executed?（）