安装卫星天线时,一般情况下要保证天线的南向净空。如果周围存在高大建筑物或山峰等遮挡物体,需保证在向南方向上,天线顶部与遮挡物顶部任意连线,该线与天线垂直向上的中轴线之间夹角不小于()。
A、45度
B、60度
C、50度
D、55度
内部网关协议RIP是一种广泛使用的基于()的协议。RIP规定一条通路上最多可包含的路由器数量是()
A customer has two locations located 7 kilometers apart. The production site has a Cisco 9509chassis with 48 Fibre Channel ports activated, and the disaster recovery site has a Cisco 9509chassis with 48 Ethernet ports activated. Which of the following products will be used to get thedata from one location to the other?()
A、IBM SAN40-B4
B、Cisco MDS 9222i
C、Cisco MDS 9148
D、IBM SAN32B-E4 with encryption
从短时记忆向长时记忆转化的重要条件是()。
A、复述
B、视觉编码
C、声音编码
D、感觉寄存
Which of the following manufacturer’s products is most closely related to the IBM System StorageN6040?()
A、HP P4500
B、EMCCLARiiON AX4
C、EMCCelerra NS-240
D、DellEquaLogic 6100
提高记忆能力的方法主要有()。
A、地点法
B、韵律法
C、记笔记
D、组块