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问题 单项选择题

属于原发性皮肤损害的是（）

A.痂

B.丘疹

C.鳞屑

D.糜烂

E.色素沉着

答案

参考答案：B

解析：皮肤病在其病变过程中，直接发生及初次出现的皮损为原发性皮损。考点：本题的题眼是原发性皮损的概念。

单项选择题

(71) is used to ensure the confidentiality, integrity and authenticity of the two end points in the private network. (72) , 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 (73) to secure data traffic can automatically authenticate devices by using (74) , 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 (75) 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.

A．IPSec
B．SSL
C．L2TP
D．The Internet Key Exchange
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填空题

标准神州行客户可通过前台（）认证进行密码变更。
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