[填空题] 时钟组件（Timer）能有规律的以一定时间间隔触发（）事件。

一台直流发电机由额定运行状态转速下降为原来的50%，而励磁电流和电枢电流保持不变，则（） ["电枢电势下降50%","电磁转矩下降50%","电枢电势和电磁转矩都下降50%","端电压下降50%"] ListBox对象列表框中的内容是通过（）属性来进行设置的。 在佛教中国化的过程中，有僧侣的士大夫化倾向，也有士大夫的僧侣化倾向，其中士大夫僧侣化常被称之为（）。 Which three statements are true about Flashback Database?（） [" Flashback logs are written sequentially, and are archived."," Flashback Database uses a restored control file to recover a database."," The Oracle database automatically creates, deletes, and resides flashback logs in the Fast RecoveryArea."," Flashback Database can recover a database to the state that it was in before a reset logs operation."," Flashback Database can recover a data file that was dropped during the span of time of the flashback."," Flashback logs are used to restore to the blocks' before images, and then the redo data may be used to roll forward to the desired flashback time."] 简要叙述市场法的优点。 时钟组件（Timer）能有规律的以一定时间间隔触发（）事件。