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问题 选择题

读下图回答1—3题。

1、若图中甲图为某山区等高线地形图（单位：米），且该地多岩崩和泥石流等地质灾害，图中最易发生泥石流灾害的是[ ]

A．A地

B．B地

C．C地

D．D地

2、乙图为甲图中某地等高线的一部分，实线为等高线（单位：米），虚线为泥石流路线，某游客此时正好位于O点，则其正确的逃生路线是图乙中①～④中的哪一条路线？[ ]

A．①

B．②

C．③

D．④

3、甲图中若救护直升机位于山顶H处，被困游客位于A、B、C、D四点中的何点，才能被救护人员直接观测到[ ]

A．A点

B．B点

C．C点

D．D点

答案

1、B

2、B

3、B

单项选择题

为配合防疫部门对某些流感病毒的防控，A省省会城市的所有火车站拟建设旅客体温监测联网系统，对每位出入火车站的乘客进行体温测量并根据阈值报警。评价该信息系统最重要的性能指标是______。

A．信息存储容量

B．系统误差

C．响应速度

D．成本收益比
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单项选择题

To compete in today’s fast-paced competitive environment, organizations are increasingly allowing contractors, partners, visitors and guests to access their internal enterprise networks. These users may connect to the network through wired ports in conference rooms or offices, or via wireless access points. In allowing this open access for third parties, LANs become （1）. Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to（2）activity. For many organizations, however, the operational complexity and costs to ensure safe third party network access have been prohibitive. Fifty-two percent of surveyed CISOs state that they currently use a moat and castle’s security approach, and admit that defenses inside the perimeter are weak. Threats from internal users are also increasingly a cause for security concerns. Employees with malicious intent can launch（4）of service attacks or steal （5） information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with （6）and worms acquired from unprotected public networks. Hackers masquerading as internal users can take advantage of weak internal security to gain access to confidential information.

1（）

A.damageable

B.susceptible

C.changeable

D.vulnerable
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