You are working on a CATDB database that contains an Oracle Database version 11.1 catalog schema owned by the user RCO11. The INST1 database contains an Oracle Database version 10.1 catalog schema owned by the user RCAT10. You want the RMAN to import metadata for database IDs 1423241 and 1423242, registered in RCAT10, into the recovery catalog owned by RCO11. You executed the following RMAN commands: RMAN> CONNECT CATALOG rco11/password@catdb RMAN> IMPORT CATALOG rcat10/oracle@inst1; What happens when you execute the above commands?（） [" They deregister all databases registered in the RCAT10 catalog."," They import metadata for all registered databases in the RCAT10 database."," They register all the RCAT10-catalog registered databases in the RCO11 catalog."," They overwrite all stored scripts in the RCO11 catalog with the same name as that in the RCAT10 catalog."]
设备从开始使用到报废为止经过的时间是设备的（）。 ["物质寿命","经济寿命","技术寿命","折旧寿命"]
下列不同类群的微生物中，属于非细胞形态的微生物是（） ["放线菌","细菌","霉菌","病毒"]
可以导致血胆固醇增高的药品是（） ["氟伐他汀","氯氮平","非诺贝物","二甲双胍","吗啡"]
需要在备忘录中记录的问题有（）。 ["不合理的现象","不均匀的地方","不节省的环节","不安全的工艺","不明白的操作"]
双馈异步风电机组低电压穿越时，通过控制（）导通、截止来启动、切除（）电路来保证机组在电压跌落的暂态下仍安全稳定运行。
