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问题 单项选择题

在Word的编辑状态下，先后依次打开了aa.doc、bb.doc、cc.doc、dd.doc等4个文档，当前的活动窗口文档名为（）。

A.aA.doc

B.bB.doc

C.cC.doc

D.dD.doc

答案

参考答案：D

问答题 简答题

心身疾病的诊断标准。
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单项选择题

A local-area network (LAN) is a communications network that (125) a variety of devices and provides a (126) for information exchange among those devices. The scope of the LAN is small typically a single building or a cluster (丛) of buildings. The LAN is usually owned by the same organization that owns the (127) devices. The internal data rate of LAN is at least several Mb/s.
The basic of LAN communication is broadcasting. At each station, there is a transmitter/receiver that communicates over a (128) shared, By other stations. A transmission from any one station is (129) to and received by all other stations.

A．adopted

B．attached

C．selected

D．unified
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