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【判断题】
数控机床数控系统的发展经历了两个阶段,有六代产品。A.
正确
B.
错误
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反馈参考答案：
举一反三
【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.
referent
B.
reference
C.
referance
D.
refering
【单选题】is the 4th layer of the OSI reference model responsible for reliable network communication between end nodes.
A.
Data link layer
B.
Session layer
C.
Transport layer
D.
Application layer
【简答题】压力继电器是一种将油液的压力信号转换为( )的电液控制元件。
【多选题】What are the advantages of the OSI reference model?( )
A.
The OSI reference model provides compatibility between devices and A standard interface that facilitates standardization
B.
An important feature of the OSI reference model is its layered architecture. The layered design method can
C.
The OSI reference model is a theoretical description of the information transmission process that occurs between network devices and defines how each layer of functionality can be achieved through hardware and software
D.
neither of the above statements is true
【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.
referent
B.
reference
C.
referance
D.
refering
【多选题】What are the advantages of the OSI reference model?( )
A.
The OSI reference model provides compatibility between devices and A standard interface that facilitates standardization
B.
The OSI reference model is a theoretical description of the process of information transmission that occurs between network devices and defines how each layer of functionality can be achieved through hardware and software
C.
An important feature of the OSI reference model is its layered architecture. Hierarchical design approach can transform large and complex problems into several smaller and manageable problems
D.
neither of the above statements is true
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