The users request that [F2], [F3], and [F4] be used to commit, rollback, and exit,respectively. How do you accomplish this?（） Add the appropriate PL/SQL code for each key. 。 Map the logical keys to the physical keys, then add the appropriate PL/SQL code for each key.。 Create an object library to define the key triggers, then reference the object library in the form. 。 This cannot be accomplished because other function keys provide this functionality by default.。
某患者，男性，32岁，肩背部红、肿、热、痛5d，人院后护理评估发现，T38、9℃p93/min、R22/min；肩背部可见一直径10cm的发红区，高出皮肤，其中心发紫，周边发红，其内可见多个脓头，挤压疼痛，且有灰白色脓液流出。该患者可能是（） 疖。 疖病。 痈。 蜂窝织炎。 丹毒。
Given that the current directory is empty， and that the user has read and write privileges to the current directory， and the following： Which statement is true？（） Compilation fails.。 Nothing is added to the file system.。 Only a new file is created on the file system.。 Only a new directory is created on the file system.。 Both a new file and a new directory are created on the file system.。
Your database is running in NOARCHIVELOG mode. You want to put the database in ARCHIVELOG mode. Which two statements regarding archive log destinations are true？（） The destination must be global only.。 A maximum of five destinations can be assigned.。 A maximum of ten different destinations can be assigned.。 All the destinations are determined by the server automatically.。 The destination may be local or remote for a Standby Database.。 The destination can be changed by setting the LOG_ARCHIVE_FORMAT initialization parameter.。
联轴器找正通常是以主动轴作为基准。
企业的广告行为对市场结构的影响主要表现在（）
