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问题 单项选择题

速率为10Gbps的Ethernet发送1bit数据需要的时间是( )。

A．1×10-6s

B．1×10-9s

C．1×10-10s

D．1×10-12s

答案

参考答案：C

解析： 速率为10 Gbps的Ethernet发送1bit数据需要的时间是1/(10×103×106)。

单项选择题

The Rational Unified Process (RUP) is a software engineering process, which captures many of best practices in modern software development. The notions of （） and scenarios have been proven to be an excellent way to capture function requirements. RUP can be described in two dimensions – time and content. In the time dimension, the software lifecycle is broken into cycles. Each cycle is divided into four consecutive （） which is concluded with a well-defined （） and can be further broken down into （） – acomplete development loop resulting in a release of an executable product, a subset of the final product under development, which grows incrementally to become the final system. The content structure refers to the disciplines, which group （） logically by nature.

a well-defined（）

A．milestone

B．end-mark

C．measure

D．criteria
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单项选择题

沥青混合料配合比设计中，沥青含量为以下两个质量比的百分率（）。

A、沥青质量与沥青混合料的质量

B、沥青质量与矿料质量

C、沥青质量与集料质量
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