下列属于动力密封的是（） 油封。 平垫密封。 填料。 离心密封。
You work as a database administrator for Certkiller .com. In a production environment， users complain about the slow response time when accessing the database. You have not optimized the memory usage of the Oracle instance and you suspect the problem to be with the memory. To which type of object would you refer to determine the cause of the slow response？（） The trace file。 The fixed views。 The data dictionary views。 The operating system log fields。 The dynamic performance views.。
简述有规则游戏的指导要点。
In your multitenant container database (CDB) containing pluggable databases (PDB), users complain about performance degradation. How does real-time Automatic database Diagnostic Monitor (ADDM) check performance degradation and provide solutions?（） It collects data from SGA and compares it with a preserved snapshot.。 It collects data from SGA, analyzes it, and provides a report.。 It collects data from SGA and compares it with the latest snapshot.。 It collects data from both SGA and PGA, analyzes it, and provides a report。
宋辽、宋夏、宋金和议的共同点不包括（）。 结束了双方大规模的战争状态。 导致了南北对峙局面的形成。 有利于北方各少数民族经济的发展。 客观上有利于双方和平相处。
When will a skills-based CSQ that requires a skill competency of four (4) select an IPCC Express agent? （）
