题目内容

局域网交换机具有很多特点。下面关于局域网交换机的论述中说法不正确的是________。

A. 低传输延迟
B. 高传输带宽
C. 可以根据用户级别设置访问权限
D. 允许不同传输速率的网卡共存于同一个网络

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The vocabulary and grammatical difference between British and American English are so trivial and few as hardly ________.

A. noticed
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A. matters
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