当前位置:国家开放大学(Delphi程序设计)题库
问题:
[填空题] 现实世界中对象具有自己的状态和行为。与此相对应,面向对象技术中的对象可以具有自己的属性和()
作为近代新儒学的代表人物,除梁启超师徒二人外,还有()、()、()等人。
简要叙述收益法的优缺点。
《文学的“根”》一文的作者是()。
These are the details about V$FLASHBACK_DATABASE_STAT: SQL> DESC v$FLASHBACK_DATABASE_STAT Name Null? Type ------------- -------- -------------- BEGIN_TIME DATE END_TIME DATE FLASHBACK_DATA NUMBER DB_DATA NUMBER REDO_DATA NUMBER ESTIMATED_FLASHBACK_SIZE NUMBER Which two statements regarding the V$FLASHBACK_DATABASE_STATview aretrue? () [" BEGIN_TIME is the time at which Flashback logging is enabled."," END_TIME is the time at which the query is executed on the view."," REDO_DATA is the number of bytes of redo data written during the interval."," This view contains information about flashback data pertaining to the last 24 hours."," FLASHBACK_DATA is the amount of flashback data generated since the database was opened."]
一台他励直流电动机拖动恒转矩负载,当电枢电压降低时,电枢电流和转速将() ["电枢电流减小、转速减小","电枢电流减小、转速不变","电枢电流不变、转速减小","电枢电流不变、转速不变"]
现实世界中对象具有自己的状态和行为。与此相对应,面向对象技术中的对象可以具有自己的属性和()