Whichtwo scenarios are NOT safe to replace a StringBuffer object with a StringBuilder object?() When using versions of Java technology earlier than 5.0.。 When sharing a StringBuffer among multiple threads.。 When using the java.io class StringBufferInputStream.。 When you plan to reuse the StringBuffer to build more than one string.。 Enitiation of separate design processes to the separation of user。
多次给药方案中,缩短给药间隔可()。 使达到CSS的时间缩。 提高CSS的水平。 减少血药浓度的波动。 延长半衰期。 提高生物利用度。
Which are DML statements? () COMMIT。 MERGE。 UPDATE。 DELETE。 CREATE。 DROP。
在伤口的近侧出现“红线”,硬而有压痛,通常是() 网状淋巴管炎。 浅部静脉炎。 浅部淋巴管炎。 深部淋巴管炎。 急性蜂窝织炎。
You are working on a database that must be functioning 24 hours a day, 7 days a week. The databaseis configured in ARCHIVELOG mode. Which two options do you have for performing user-managed backups() You can perform consistent backups only.。 You can perform a complete database backup without shutting down the database instance.。 You can back up data files only when all data files have the same SCN recorded in the control file.。 You can back up only those data files whose headers are frozen by using ALTER TABLESPACE BEGINBACKUP or ALTER DATABASE BEGIN BACKUP commands.。
()对各标段的工程质量和安全生产进行统一管理,负责制定项目部的质量和安全工作目标、计划,并组织贯彻实施。