第2题:[单项选择]<br><br><br/>A.pair<br/>B.couple<br/>C.list<br/>D.line<br/>参考答案:B 答案解析:[分析] pair对,双;couple 双、对(可用 a couple of 表示“两个,几个”);list 列表;a list of 许多,大量;line 线条。因此选择B。
A. 限制每个端口的数据传输率 B. 限制每个端口的流量 C. 限制每个端口可接入的IP地址 D. 限制每个端口可接入的MAC地址 参考答案:A 答案解析:本题考查访问控制的基本知识。 远程用户拨入认证服务(Remote Authentication Dial In UserService, RADIUS)由RFC2865、RFC2866定义,
第24题: [单项选择]{{B}}Passage One
Questions 26 to 28 are based on the passage you have just heard.{{/B}} A. Trains go into the sky. B. Trains go under the ground. C. Trains go through mountains. D. Trains go under the water. 参考答案:A 答案解析:[听力原文]
Which of the following is NOT mentioned in the passage