在纸上剪一个很小的三角形孔，让太阳光垂直照射在三角形孔上，那么地面上形成的光斑是

“按规定程序，加入一种或数种辅料，反复炮制”的炮制工艺是

A．蒸法

B．煮法

C．燀法

D．复制法

E．发酵法

运动试验中无论发生于何时均属异常的症状是（）。

A.胸痛

B.疲劳

C.出汗

D.轻度呼吸困难

E.气喘

患者，女。阵发性鼻塞、喷嚏、流清稀涕、形寒怕冷、手足不温，伴头晕耳鸣、夜尿多、五心烦热。检查见双下鼻甲肿胀，粘膜灰淡，分泌物清稀，舌淡红，苔白润，脉细弱。

此病的病因病机为：（）

A.肺气虚寒

B.邪毒久留，气滞血瘀

C.脾气虚弱

D.肺经湿热

E.脾胃湿热

(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．authenticity
B．IPSec
C．confidentialily
D．integrity

下面关于Windows98设备管理的基本任务说法中不正确的是( )。

A．向用户提供统一、方便的设备应用接口

B．通过使各个外设之间、外设与CPU之间的串行工作，来提高外部设备的使用率和整个系统的效率

C．为多道作业合理地分配和回收设备

D．实现外部设备中断请求的处理