题目内容

A．forB．offC．backD．in

A. for
B. off
C. back
D. in

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A．IntroductionB．SpecificationC．RepresentationD．Separation

A. Introduction
B. Specification
C. Representation
D. Separation

在OSI的数据链路层中，(12)响应速度慢。

A. 正向应答
B. 负向应答
C. 正向应答或负应回答
D. 双向应答

A．deprivationB．stimulationC．eliminationD．restriction

A. deprivation
B. stimulation
C. elimination
D. restriction

A．dramaticallyB．urgentlyC．faithfullyD．incidentally

A. dramatically
B. urgently
C. faithfully
D. incidentally