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Which layer-function is mostly implemented in a network adapter?（ ）.
A.Physical layer and link layer
B.Network layer and transport layer
C.Physical layer and.network layer
D.Transport layer and application layer
B.Network layer and transport layer
C.Physical layer and.network layer
D.Transport layer and application layer
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参考解析
解析：解析：翻译：网卡通常作用于（ ）？A．物理层和数据链路层B．网络层和传输层C．物理层和网络层D．传输层和应用层
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