What purpose would you achieve by enabling the block change tracking feature？（） [" Eliminate the necessity for backups."," Perform optimized image copy backups."," Perform optimized incremental backups."," Enable checkpoint （CKPT） to perform checkpointing at every block change."," Enable database writer （DBWn） to write changed blocks to data files faster."]
Which trigger property applies to Key triggers? （） ["Hide Keys ","Show Menu Keys ","Hide Menu Keys ","Display in 'Keyboard Help' ","Hide Keys Description&e"]
余华的先锋小说有哪些不同的类型？举例分析其成败得失。
A highly available WebLogic cluster in UNIX is configured for automatic server migration. Node Managed is configured on both machines to start managed servers. How should you simulate a managed server failure to test whether automatic server migration is working?（） ["Shut down the managed server from the WebLogic console.","Shut down the managed server using the WLST command through Node Manager.","Run "kill -9" once to kill the managed server process.","Run "kill -9" to kill the managed server process, and run "kill -9" one more time if the managed server is restarting."]
表示钢材抗拉强度的技术指标有（）。 ["屈服点","伸长率","屈强比","抗拉强度"]
固液界面上发生粘附的条件有哪些？
