[填空题] 滚动轴承是由（）和保持架等组成。

印度民族大起义中，许多王公成为起义的领导者，这说明（）。 ["起义具有反封建、反侵略的双重目的","封建王公演化成为资产阶级","起义以反对殖民统治为主要目的","印度这一时期的阶级矛盾大大缓和"] You want to migrate your application from the development environment to the production environment. While doing the task， you want the database objects owned by the user DEVUSER in the development environment to be moved to the user APPS in the production environment. Which option of Oracle Data Pump Import would you use to achieve this objective？（） ["owner","touser","include","schemas","fromuser","transform","remap_schema","remap_datafile","reuse_datafiles","remap_tablespace"] 原生动物 You want to move all objects of the APPS user in the test database to the DB_USER schema of theproduction database.  Which option of IMPDP would you use to accomplish this task（） ["FULL","SCHEMAS","TRANSFORM","REMAP_SCHEMA","REMAP_TABLESPACE"] L-O-R三通密封材料不应有（） ["毛刺","杂质","裂纹","A+B+C"] 滚动轴承是由（）和保持架等组成。