【简答题】有机物A、B的分子式均为C 10 H 10 O 4 ,C在碱性条件下能发生银镜反应,各有机物之间存在如下转化关系: (1)写出C中含有的一种官能团名称:______;由A转化为水杨酸、C、D的反应类型______. (2)A的结构简式______;B的结构简式______; (3)符合下列条件的同分异构体共有______种. ①分子式为C 8 H 8 O 3 ②苯环邻位上有两个取代基 ③能与Fe...
【多选题】You are the network administrator for All network servers run Windows Server 2003. Recently, another network administrator create a scheduled task to perform a normal backup of Microsoft Exchange Serv...
A.
In the Backup utility, clear the Enabled (scheduled tasks runs at specified time) check box.
B.
In Control Panel, use Scheduled Tasks to pause Task Scheduler.
C.
Run the Schtasks command with the /end /p parameters.
D.
Use the Services snap-in to change the startup type of the Task Scheduler service from Automatic to Manual.