The OS！( ) model， sometimes also called ISO or 7 layers reference model for communication， has been developed by the International Standards Organization in early 1980’ s.

[单选题]The OSI(66)model, sometimes also called ISO or 7 layers reference model for communication, has been developed by the International Standards Organization in early 1980's.A．referentB．referenceC．referanceD．refering

[单选题]The OSI (68) model，sometimes also called ISO or 7 layers reference model for communication.has been developed by the International Standards Organization in early 1980's.(68) A．referentB．referenceC．referanceD．refering

The humanities, also called social sciences, include history, anthropology, comm

_____has been called the summit of the English Renaissance.A. Christopher Marlow

[名词解释] 模型（Model）

[单选题]The spiral model is a software development model combining elements of both

[单选题]Is a programming model and an associated implementation for processing and generating big data sets with a parallel, distributed algorithm on a cluster.The model is a specialization of the split-apply-combine strategy for data analysis().A．HDFSB．Chuk

[单选题]Relational Model表示（）。A . 关系模型B . 数据结构C . 网络D . 实体

[单选题]Data Model表示（）A . 数据模型B . 文件C . 因特网D . 记录

[单选题]With the open-access publishing model, the author of a paper is required toA．cover the cost of its publication.B．subscribe to the journal publishing it.C．allow other online journals to use it freely.D．complete the peer-review before submission.