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问题 单项选择题

具有调节汗孔开合作用的气是（）。

A．宗气

B．元气

C．营气

D．卫气

E．脏腑之气

答案

参考答案：D

解析：

[解题思路] 卫气的生理功能有三个方面。一是护卫肌表，防御外邪入侵。二是温养脏腑、肌肉、皮毛；三是调节控制腠理的开合、汗液的排泄，以维持体温的相对恒定。 [命题规律] 考查“精气血精液神”。必须掌握。

单项选择题

(1) is used to ensure the confidentiality,integrity and authenticity of the two end points in the private network． (2) ，an application—layer protocol，authenticates each peer in an IPSec transaction．IKE negotiates security policy，determining which algorithm may be used to set up the tunnel．it alsohandles the exchange of session keys used for that one transaction．

Networks that use (3) to secure data traffic can automatically authenticate devices by using (4) ，which verify the identities of the two users who are sending information back and forth．IPSeccan be ideal way to secure data in large networks that require secure connections among many devices．

Users deploying IPSec can (5) their network infrastructure without affecting the applications on individual computer．The protocol suite is available as a software-only upgrade to the networkinfrastructure．This alows security to be implemented without costly changes to each computer．Mostimportant，IPSec allows interoperability among different network devices，PCs and other computingsystems．

4（）

A．characteristics

B．associated links

C．digital certificates

D．attributes
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单项选择题

有意识地让儿童多次使用同一个言语因素或训练儿童某方面言语技能技巧的方法是幼儿园语言教育的（）。

A.示范模仿法

B.视、听、讲、做结合法

C.游戏法

D.练习法
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