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问题 单项选择题

DD862-4型单相电能表的电流规格为5（20）A，当此电能表工作在20A时，电能表（）。

A、能长期工作但不能保证准确度

B、能保证准确度但不能长期工作

C、能长期工作且保证准确度

答案

参考答案：C

单项选择题

对内分泌功能亢进者，下述哪个治疗最为理想（）

A.手术切除增生或肿瘤

B.化学治疗

C.药物抑制激素合成

D.放射治疗

E.用靶激素抑制促激素的合成和分泌
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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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