[单选] Given the following query:SELECT last_name, first_name, age, hire_date FROM employee WHERE age > 40Which of the following clauses must be added to return the rows sorted by AGE, oldest first, and by LAST_NAME, from A to Z?（）

A . SORT BY age ASC, last_name
B . SORT BY age DESC, last_name
C . ORDER BY age DESC, last_name
D . ORDER BY age ASC, last_name

组合式制动梁全长检修限度为（），超限时恢复原型。 1765～1700mm。 1762～177mm。 1643～1649mm。 1640～165mm。 Your production database is running in archivelog mode and you are using recovery manager (RMAN) with recovery catalog to perform the database backup at regular intervals. When you attempt to restart the database instance after a regular maintenance task on Sunday, the database fails to open displaying the message that the data file belonging to the users tablespace are corrupted. The steps to recover the damaged data files are follows: 1. Mount the database 2. Open the database 3. Recover the data file 4. Restore the data file 5. Make the data file offline 6. Make the data file online Which option identifies the correct sequence that you must use to recover the data files?（） 2, 4, 3。 1, 4, 3, 2。 2, 5, 4, 3, 6。 5, 2, 4, 3, 6。 1, 5, 4, 3, 6, 2。以下关于 Virtual Disk Mirroring 的描述不正确的是（）单一存储故障时数据不丢，业务不停。 Virtual Disk Mirroring 的两套镜像 vDisk 可以各自分布在两套 SVC 上。 Virtual Disk Mirroring 的两套镜像 vDisk 可以各自分布在两套物理存储设备上。可以为已有的 VDisk 加入一份拷贝形成 VDM，也可以从 VDM 中分离出一份拷贝。现代农业原料采购的方法有哪些？ Given the following query:SELECT last_name, first_name, age, hire_date FROM employee WHERE age > 40Which of the following clauses must be added to return the rows sorted by AGE, oldest first, and by LAST_NAME, from A to Z?（）

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[单选] Given the following query:SELECT last_name, first_name, age, hire_date FROM employee WHERE age > 40Which of the following clauses must be added to return the rows sorted by AGE, oldest first, and by LAST_NAME, from A to Z?（）

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