A customer asked a consultant to create the infrastructure for an application. The application is designed to charge customers for conferencing services based on usage. To determine if a Storage Area Network （SAN） is the best storage solution， which of the following questions is most appropriate？（） Will the application require a database？。 Which operating system does the application require？。 Will the data need to be backed up in real time？。 Does the application share data among the servers？。
企业内部用电，采取削峰填谷措施，有利于提高（）。
For which two SQL statements can you use the Flashback Table feature to revert a table to its previous state？（） UPDATE TABLE。 CREATE CLUSTER。 TRUNCATE TABLE。 ALTER TABLE MOVE。 INSERT INTO···VALUES。 ALTER TABLE···DROP COLUMN。 ALTER TABLE···DROP PARTITION。
Which is an /SQL*Plus command? （） INSERT。 UPDATE。 SELECT。 DESCRIBE。 DELETE。 RENAME。
谈谈个人空间研究在城市规划设计中的意义。
Which additional application must be installed in order to use WebSMIT？（）
