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神经细胞动作电位复极相中出现的去极化后电位称为

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The X. 25 standard specifies three layers of functionality. Which layers of the OSI model

A. the Data Link, Network and Session Layers
B. the Physical, Data Link and Network Layers
C. the Physical, Data Link and Transport Layers
D. the Session Layers, Network Layers and Presentation Layers

确定一个货物买卖合同是否具有国际性,关键是要确定当事人的国籍,代表处机构所在地的处所往往也被视为通常意义上的“营业地”。()

A. 正确
B. 错误

【C14】

A. whole
B. all
C. present
D. entire

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