白银市丰华区浩宇水泥有限公司，系私营有限责任公司，法定代表入伍某，主要生产、经营水泥及水泥制品。经查，该企业利用购货方是本地区不索要发票的混凝土生产企业和个人，采取设置“账外账”等手段，将这部分收入不向税务机关进行申报纳税。根据《中华人民共和国税收征收管理法》及《中华人民共和国行政处罚法》等相关规定，税务机关对该企业设置“账外账”，少缴上述税款的行为定性为偷税，追缴税（费）款723.18万元，并处所偷税款50%罚款，按日加收滞纳金，并以涉嫌逃税罪将其移送公安机关。

在刑事诉讼过程中，伍某欲委托辩护人，下列选项中不能充当辩护人的有（）。

A.正在被执行刑罚的人

B.本案的证人

C.犯罪嫌疑人的亲友

D.限制行为能力人

E.被告人的监护人

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 (171) . Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to (172) 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 (173) of service attacks or steal (174) information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with (175) 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.

（171）是（）

A.damageable

B.susceptible

C.vulnerable

D.changeable