常用的液压基本回路有：（）控制回路、（）控制回路、（）控制回路和顺序动作回路等四大类。
You issued the following command to mount the DATA disk group in restricted mode： ALTER DISKGROUP data MOUNT RESTRICT； What is the implication of this command？（） The client RDBMS instance can access the file as a read-only file.。 A new disk cannot be added to a disk group.。 A disk in a disk group can be taken offline.。 The client RDBMS instance cannot access the files in the disk group.。
盛装其他气体的钢质无缝气瓶，检验周期（） 1年一次。 2年一次。 3年一次。 5年一次。
天线安装时，天线安装支架应高出天线顶部约（）mm。 50。 100。 200。 300。
You are managing an Oracle Database 11g database. The database is open， and you plan to performRecovery Manager （RMAN） backups. Which three statements are true about these backups（） The backups would be consistent. 。 The backups would be inconsistent.。 The backups would be possible only if the database is running in ARCHIVELOG mode.。 The backups would be possible only if the database is running in NOARCHIVELOG mode.。 The backups need to be restored and the database has to be recovered in case of a media failure.。
吉尔福特认为，个体发散思维能力可分解为以下哪些指标？（）
