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【简答题】
设A,B为n阶矩阵,且A为对称矩阵,证明BTAB为对称矩阵
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反馈参考答案：
举一反三
【单选题】What does split horizon prevent?
A.
分割阻止了什么？
B.
routing loops, link state 路由环路，链路状态
C.
routing loops, distance vector 路由环路，距离矢量
D.
switching loops, STP 交换环路 ，生成树
E.
switching loops, VTP 交换环路，VTP
【简答题】根据系统包含的排队阶段数,可以将排队系统的服务机制分为()服务机制和()服务机制;而根据是否有顾客进出排队系统,可以将排队系统分为()型和()型。
【单选题】What does split-horizon do?
A.
Prevent routing loop in distance vector protocol
B.
Prevent switching loop in distance vector protocol
C.
Prevent switching loop in link-state protocol
D.
Prevent routing loop in link-state protocol
【单选题】Can you tell me ______?
A.
what does the island look like
B.
what the island looks like
C.
how does the island look like
D.
how the island looks like
【单选题】Please tell me______.
A.
what does this sentence mean
B.
what means this sentence
C.
what this sentence means
D.
what is the meaning of the sentences
【单选题】What does split horizon prevent?
A.
routing loops, link state
B.
routing loops, distance vector
C.
switching loops, STP
D.
switching loops, VTP
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