PC机中使用的双通道RDRAM每个通道的数据位宽为16,它在一个存储器_爱下问搜题

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问题单项选择题

PC机中使用的双通道RDRAM每个通道的数据位宽为16,它在一个存储器总线周期内实现两次数据传送。当存储器总线时钟频率为400MHZ时，这种双通道RDRAM的带宽是

A． 400MB/S

B． 800MS/S

C． 1.6GB/S

D． 3.2GB/S

答案

参考答案：D

解析：双通道DRAM在一个存储器总线周期内实现两次数据传送即DDR SDRAM 可以在时钟周期的上升沿和下降沿同时传送数据。2×2×400MHZ×l6/8=3.2GB/S

单项选择题

原发性不孕的定义以下正确的是

A．夫妇婚后未避孕，性生活正常，同居1年而未妊娠者

B．夫妇婚后未避孕，性生活正常，第一次生育后同居1年而未妊娠者

C．夫妇婚后未避孕，性生活正常，同居2年而未妊娠者

D．夫妇婚后未避孕，性生活正常，第一次生育后同居2年而未妊娠者

E．夫妇婚后同居1年而未妊娠，一方有无法纠正的解剖生理缺陷者

填空题

Blair Admits Never Having Sent Flowers to His Wife

British Prime Minister Tony Blair admitted on a television programme that he has never sent flowers to his wife Cherie and that he had a youthful crush on Hollywood beauty Grace Kelly.
Blair, who allowed Channel 4 interviewer June Sarpong to shadow him for two days last month, made other personal (1) when asked questions he rarely hears on the usual television political (2) .
During the interviews for a program targeting 18-30 year (3) , the prime minister admitted he sometimes has to "wing it" when (4) public appearances and that he yearns to go out for a drink (5) being recognised.
However, the most dramatic revelation was his reply to Sarpong’s (6) on whether he still sends his wife flowers, prompting his interviewer to (7) in disbelief. "I’ve never sent her flowers. If I sent her flowers, she would (8) worried," Blair said.
But he added: "I am romantic. There are other ways of (9) romantic."
Blair needed a few moments to recall which posters he had (10) his bedroom wall as a youngster, then revealed: "I’ll tell you... actually, (11) I was younger, I loved Grace Kelly."
Born in 1929, Kelly (12) in films like ’Dial M For Murder’, ’Rear Window’ and ’High Society’ in the mid-1950s, but (13) acting to marry Prince Rainier of Monaco in 1956, when Blair was (14) two years old.
Blair admitted he initially found it "odd" to be (15) minister and to be rushed in motorcades from appointment to (16) , and worried that his lifesty left him "a bit isolated" from (17) people.
He admitted that he was constantly on the phone between public (18) , and rarely had time to prepare for his next (19) , telling Sarpong: "I wing it all the time."
And he revealed he has to check himself before he replies to (20) questions from the public. "The worst thing is when someone is giving you a real earful and you think ’I’m going to say something I will regret’," he said.
Asked what he would do if he could be invisible for a day, Blair yearned for a more ordinary life, saying he would "just walk down the street and go to the pub... just be absolutely normal".