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陶与瓷的区别
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举一反三
【简答题】唯一标识每一个用户的是用户（）和用户名。
【单选题】—There were already five people in the car but they managed to take me as well ． —It a comfortable journey ．
A.
． can’t be
B.
． shouldn’t be
C.
． mustn’t havebeen
D.
． couldn’t have been
【单选题】The normal functioning of such branches were already guaranteed by their ( ) upon their establishment.这种分公司的正常职能在它们建立时已由其总部担保。
A.
headquarters
B.
head
C.
branch
D.
total office
【简答题】唯一标识每一个用户的是（）。
【单选题】配置高速缓冲存储器是为了解决( )
A.
主机与外设之间速度不匹配的问题
B.
CPU与内存之间速度不匹配的问题
C.
CPU与外存之间速度不匹配的问题
D.
内存与外存之间速度不匹配的问题
【单选题】Most of the extrasolar planets already known to us
A.
were found by telescopic means.
B.
were found by Galileo and Kepler.
C.
were found thanks to hi-tech development.
D.
were found in the latest two decades.
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