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问题 选择题

2013年12月10日至13日召开的中央经济工作会议指出，2014年经济工作坚持稳中求进的总基调把     贯穿于经济社会发展各个领域各个环节。

A．调整结构

B．改革创新

C．保障发展

D．对外开放

答案

答案：B

题目分析:本题为时政题，解析略。

单项选择题

患者，男，50岁。发热伴少尿3天入院。血压160/100mmHg，血红蛋白65g/L，血肌酐10mg/dl，尿素氮100mg/dl，血浆总蛋白4.8g/dl。X线腹部平片示双侧肾影长轴约8cm。本例最可能的诊断是()

A．急性肾衰竭

B．急进性肾炎

C．急性肾炎

D．慢性肾功能衰竭急性加剧

E．原发性肾病综合征Ⅱ型
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单项选择题

A glue that holds the whole Internet together is the network layer protocol, (71) .Unlike most older network layer protocols, it was designed from the beginning with internetworking in mind. Its job is to provide a (72) way to transport data grams from source to destination, without regard to whether these machines are on the same network or whether there are other networks in between them.

Communication in the Internet works as follows. The (73) layer takes data streams and breaks them up into data grams. Each datagram is transmitted through the Internet, possibly being fragmented into smaller units as it goes. When all the pieces finally get to the destination machine, they are reassembled by the (74) layer into the original datagram. This datagram is then handed to the transport layer, which inserts it into the receiving process’ input stream.

An IP datagram consists of a header part and a text part. The header has a (75) part and a variable length optional part.

74（）

A．data link

B．transport

C．network

D．application
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