“三所三队”中“三队”指的是（）。 巡警队。 交警队。 治安队。 刑警队。
Examine the description of the EMPLOYEES table: EMP_ID NUMBER(4) NOT NULL LAST_NAME VARCHAR2(30) NOT NULL FIRST_NAME VARCHAR2(30) DEPT_ID NUMBER(2) Which statement produces the number of different departments that have employees with last name Smith? （） SELECT COUNT (*) FROM employees WHERE last _name='smith';。 SELECT COUNT (dept_id) FROM employees WHERE last _name='smith';。 SELECT DISTINCT (COUNT (dept_id) FROM employees WHERE last _name='smith';。 SELECT COUNT (DISTINCT dept_id) FROM employees WHERE last _name='smith';。 SELECT UNIQE (dept_id) FROM employees WHERE last _name='smith'。
收集网络个人信息资料声明应包括的主要内容有（） 收集网络个人信息资料目的的声明。 网络个人信息资料的共享或再利用的声明。 查阅、修正及更新网络个人信息资料的声明。 网络个人信息资料的保护措施及隐私权保护政策链接的声明。 收集网络个人信息资料技术方法的声明。
（）是基层所队警务保障正规化中的内容。 经费保障。 训练保障。 办公用房。 民警维权。
Your database instance is configured with automatic undo management and the UNDO_RETENTIONparameter is set to 900 seconds. You executed the following command to enable retention guarantee: SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE; What effect would this command have onthe database（） The extents in the undo tablespace retain data until the next full database backup.。 The extents containing committed undo in the undo tablespace are not overwritten for at least 15 minutes.。 The extents containing committed data in the undo tablespace are not overwritten until the instance is shutdown.。 The extents containing committed undo in the undo tablespace are transferred to Flash Recovery Areabefore being overwritte。
药物经济学研究中，用药结果表达形式包括（）
