题目内容

SCTE板卡上GPS指示灯()表示GPS锁定

A. 慢闪
B. 快闪
C. 不亮
D. 常亮

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试简述湿式介电分选方法的基本原理?

()是养老保险最直接、最根本的目标。

遇列车调度电话不通时,闭塞法的变更或恢复,应由该区间()的车站值班员确认区间空闲后,直接以电话记录办理。

A. 两端站
B. 发车站
C. 接车站
D. 优先发车站

Assume your situation can be described as follows: x A full backup taken using RMAN is available on disk. x The current control files were NOT damaged and do not need to be restored. x All data files are damaged or lost. x The database is in NOARCHIVELOG mode. Which RMAN command would be most appropriate to use in line 3 of the following RMAN command set to restore and fully recover your database?() 1. RMAN> STARTUP MOUNT 2. RMAN> RESTORE DATABASE; 3. RMAN> () 4. RMAN> ALTER DATABASE OPEN;

A. RECOVER DATABASE;
B. SWITCH DATAFILE ALL;
C. RESTORE CONTROL FILE;
D. RECOVER DATABASE USING BACKUP CONTROL FILE;

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