Which of the following items can be used as a discharge lamp?()
A、Halogen lamp
B、Light Emitting Diodes (LED)
C、Fuser lamp
D、Cleaning roller
下列不属于数据库系统特点的是( )。
A、采用特定的数据模型
B、有统一的数据控制功能
C、数据冗余度高
D、数据独立性高
VisualFoxPro是一种( )。
A、数据库系统
B、数据库管理系统
C、数据库
D、数据库应用系统
如果要求幻灯片能够在无人操作的环境下自动播放,应该事先对演示文稿进行()
A、 自动播放
B、 排练计时
C、 存盘
D、 打包
After a number of days set by the parameter CONTROL_FILE_RECORD_KEEP_TIME, the information in the control file is overwritten by RMAN. What is this parameter’s default value?()
A、1 day
B、5 days
C、7 days
D、31 days
An administrator has setup three partitions using shared pool with 2 processing units. They are activated in the following sequence: Partition one: Min. = 1.0, max = 2.0, desired = 1.5 Partition two: Min. = 1.0, max = 2.0, desired = 1.0 Partition three: Min. = 0.1, max = 1.0, desired = 0.8. What is the outcome?()
A、Partition one starts and has 2.0 processors allocated. Partition two does not start. Partition three does not start.
B、Partition one starts and has 1.0 processors allocated. Partition two starts and has 1.0 allocated. Partition three does not start.
C、Partition one starts and has 1.5 processors allocated. Partition two does not start. Partition three starts and has 0.8 processors allocated capacity.
D、Partition one starts and has 1.5 processors allocated. Partition two does not start. Partition three starts and has an allocated capacity of 0.5 processors.