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问题 问答题 简答题

什么是时代精神？内涵是什么？

答案

参考答案：

是在新的历史条件下形成和发展的，是体现民族特质，顺应时代潮流的思想观念，行为方式，价值取向，精神风貌和社会风尚的总和。

内涵：改革创新是核心改革创新是进一步解放和发展生产力的必然要求；是建设社会主义创新型国家的迫切要求；是落实科学发展观，构建社会主义和谐社会的重要条件

单项选择题

The TCP protocolis a （1）layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides of the globe. In other words, each connection creates a （2） witha length that may be totally different from another path created by another connection. This means that TCP cannot use the same retransmission time for all connections. Selecting a fixed retransnussion time for all connections can result in serious consequences. If the retransmission time does not allow enough time for a （3） to reach the destination and an acknowledgment to reach the source, it can result in retransmission of segments that are still on the way. Conversely, if the retransmission time is longer than necessary for a short path, it may result in delay for the application programs. Even for one single connection, the retransmission time should not be fixed. A connection may be able to send segments and receive （4） faster during nontraffic period than during congested periods. TCP uses the dynamic retransmission time, a transmission time is different for each connection and which may be changed during the same connection. Retransmission time can be made（5） by basing it on the round-trip time (RTT). Several formulas are used for this purpose.

（2）是（）

A.path

B.window

C.response

D.process
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多项选择题

提高产品价值的途径有（）。

A．功能大提高，成本小提高

B．功能提高，成本下降

C．功能下降，成本提高

D．功能提高，成本不变

E．功能小提高，成本大提高
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