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问题 单项选择题

流行性脑脊髓膜炎与肺炎链球菌脑膜炎的鉴别主要依靠（）。

A.脑电图

B.发病季节

C.检查皮肤有无瘀点

D.脑脊液常规检查

E.脑脊液涂片找细菌及培养

答案

参考答案：E

多项选择题

内部感觉包括（）。

A.运动觉

B.平衡觉

C.机体觉

D.皮肤觉
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单项选择题 共用题干题

For  (1) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (2) for every packet sent. Instead,when a connection is established, a route from the(3) machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (4) . That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works.When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an (5) telling which virtual circuit it belongs to.

空白（1）处应选择（）

A.connectionless

B.connection-oriented

C.datagram

D.telegram
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