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【单选题】
()印记技术常用于检测蛋白质A.
Southern
B.
Western
C.
Northern
D.
Eastern
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【简答题】__________负责端到端的通信，它既是OSI模型中负责数据通信的最高层，又是面向通信的低三层和面向处理的高三层之间的中间层。
【简答题】Why is （71） fun? What delights may its practitiopect as his reward? First is the sheer joy of things. As the child delights in his mud pie, so the enjoys building things, especially thing...
【单选题】什么是OSI模型?
A.
规定信息如何在网络中传输的概念框架;
B.
描述数据企网络上是如何从一个应用程序到达另一个应用程序的模型;
C.
规定每一层的网络功能的概念框架;
D.
上述说法都正确。
【单选题】—Why is _____ easy for such a young girl to learn three foreign languages so well? —Because Britain, Germany and France are all very near _____ country. [ ]
A.
it; his
B.
that; his
C.
she; her
D.
it; her
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