Your multitenant container database (CDB) contains a pluggable database, HR_PDB. The default permanent tablespace in HR_PDB is USERDATA. The container database (CDB) is open and you connect RMAN. You want to issue the following RMAN command: RMAN > BACKUP TABLESPACE hr_pdb:userdata; Which task should you perform before issuing the command?（）

[单选题]缝合大房间隔缺损时，需要特别注意避免缝上哪个瓣膜，以免造成手术失败。（）

[单选题]患者女性，52岁，气短3个月。胸片显示上纵隔增宽，右上叶支气管狭窄，考虑为：（）

[单选题]用于含糖及脂肪多的药粉制备蜜丸（）

[单选题]下列属于封闭式提问的问题是（）

[单选题]下列哪项，不属于真武汤证临床表现的是(     )

[单选题]施工验收规范规定风管的漏风测试试验以（）为主。

[单选题]根据购进固定资产的进项税额是否可以扣除，可以将增值税划分为不同类型。2009年1月1日起，我国增值税实行（　）。

[单选题]下列关于斗篷野照射体位的描述正确的是（）

[单选题]有应力中断作用，可减小游离缺失末端基牙扭力的卡环是（）

[单选题]上臂部受伤后出现腕下垂，此时最可能是（）

[单选题]You are connected using SQL* Plus to a multitenant container database (CDB) with...

[单选题]Your multitenant container database (CDB) is running in ARCHIVELOG mode. You con...

[单选题]Flashback is enabled for your multitenant container database (CDB), which contai...

[单选题]In your multitenant container database (CDB) containing pluggable database (PDBs...

[单选题]In your multitenant container database (CDB) containing pluggable database (PDBs...

[多选题]Your multitenant container database has three pluggable databases (PDBs): PDB1, ...

[多选题]Your multitenant container database (CDB) contains some pluggable databases (PDB...

[单选题]In your multitenant container database (CDB) containing pluggable databases (PDB...

[多选题]Your multitenant container database (CDB) contains three pluggable database (PDB...

[多选题]You are planning the creation of a new multitenant container database (CDB) and ...