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主机A基于TCP向主机B连续发送3个TCP报文段。第1个报文段的序号为90，第2个报文段的序号为120，第3个报文段的序号为150。第1、2个报文段中有多少数据

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主机A基于TCP向主机B连续发送3个TCP报文段。第1个报文段的序号为90，第2个报文段的序号为120，第3个报文段的序号为150。考虑在一条具有10ms来回路程时间的线路上采用慢启动拥塞控制而不发生网络拥塞情况下的效应，接收窗口24KB，且最大段长2KB。那么，需要多长时间才能发送第一个完全窗口

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Questions 7 to 10 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage. The brain spreads resources ______ if it’s busy focusing on many aspects of a task.

A. averagely
B. thickly
C. thinly
D. wildly

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Questions 7 to 10 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage. What is the passage mainly about

A. To explain that people are born to compute.
B. To illustrate children’s counting skills.
C. To prove that people gradually learn to compute.
D. To suggest the ways to learn computing.

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Questions 4 to 6 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now, listen to the passage. The experts predict that one strong sales area of the show will be ______.

A. netbook
B. mobile phone
C. three-D TV
D. digital tablet

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主机A基于TCP向主机B连续发送3个TCP报文段。第1个报文段的序号为90，第2个报文段的序号为120，第3个报文段的序号为150。 第1、2个报文段中有多少数据

Questions 7 to 10 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage. The brain spreads resources ______ if it’s busy focusing on many aspects of a task.

Questions 7 to 10 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage. What is the passage mainly about

Questions 4 to 6 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now, listen to the passage. The experts predict that one strong sales area of the show will be ______.

主机A基于TCP向主机B连续发送3个TCP报文段。第1个报文段的序号为90，第2个报文段的序号为120，第3个报文段的序号为150。第1、2个报文段中有多少数据