大二男生王某，经常会想一些没有意义的问题，比如，一个定理为什么这样理解，而不那样理解，明明知道那样理解是与事实不符合，也知道书上说的是对的，但老是想„„这种情况严重影响正常生活，为此他感到非常苦恼。该生出现的症状主要体现在（）。 ["情绪方面","行为方面","观念方面","意向方面"]
You configured the Flash Recovery Area （FRA） for your database. The database instance is running inARCHIVELOG mode. The default location for the archived redo log files is the Flash Recovery Area. Which twofiles are removed automatically if the space is required in the FRA as per the retention policy（） ["Flashback log files","Backups that have become obsolete","User managed backups of the data files and control files","Archived redo log files that have multiple copies in a different archive location and not backed u"]
Which two situations necessitate integration of external systems with IBM Tivoli Access Manager for Enterprise Single Sign-On using API published by IBM Tivoli Access Manager for Enterprise Single Sign-On IMS Server？（） ["to add second factor based authentication to a Web application","to pre-populate user wallets with all their application credentials in one go","to enhance out-of-the-box audit logging by creating custom audit log events","to create reports from audit log trails collected by IBM Tivoli Access Manager for Enterprise Single Sign-On","to configure automatic password change on expiry for an application so that the new password is a random string of specified strength"]
简述科赫原则。（如何判定某种微生物是病原菌？）
锚杆注浆浆液通常选用灰砂比1∶1.5～1∶2的水泥砂浆或水灰比为0.6～0.65的纯水泥浆
现代教学手段在体育教学中常用的方法主要有（）和（）两种。
