Fibonacci数列的规律是:前两个数为1,从第三个数开始,每个数是它前两个数之和,即:1,1,2,3,5,8,13,21,34,55,89,…。某人编写了下面的函数,判断大于1的整数x是否为Fibonacci数列中的某个数,若是,则返回True:否则返回False。测试时发现,对于所有正整数x,函数都返回False,程序需要修改。下面的修改方案中正确的是( )。
A、把a=b与b=c的位置互换
B、把c=a+b移到b=c之后
C、把Do While xb
D、把If x=b Then flag=True改为If x=a Then flag=True
将第一张幻灯片副标题的动画效果设置为:“切入”、“自左侧”;将第二张幻灯片版式改变为“垂直排列标题与文本”;在演示文稿的最后插入一张版式设置为“仅标题”幻灯片,键入“细说生活得失”。
创建索引文件的命令是( )。
A、ORDER
B、INEDX
C、SET INDEX TO
D、SET ORDER TO
将第二张幻灯片版式设置为“标题和内容”,把这张幻灯片移为第三张幻灯片;将第二张幻灯片的文本部分动画效果设置为“飞入”、“自底部”。
Click the Exhibit button and examine the diagram, which illustrates the components performing tasks within an Oracle Shared Sever environment. Which task is being performed by component 4?()
A、The PMON process registers the request in the response queue.
B、A shared sever places the process request in the response queue.
C、A request within the request queue is processed by an idle shared server process.
D、A dispatcher assigns a request from the request queue to and idle shared server process.
Two data files have been deleted at the operating system level by accident. Your database is running in ARCHIVELOG mode and online backups are taken nightly. One of the data files that has been deleted belongs to the USERS tablespace on the other belongs to the SYSTEM tablespace. How can you recover from this situation?()
A、Shut down the database, restore the two data files and then start up the database.
B、Take the system and users tablespace offline, restore the two data files, recover the two datafiles, and then bring the SYSTEM and USERS tablespaces online.
C、Shut down the database, restore the two data files, start up the database in MOUNT mode, recover the two data files, and then alter the database open.
D、Take the SYSTEM and USERS tablespaces offline, recover the two datafiles and then bring the SYSTEM and USERS tablespaces online.