在装有避雷器、避雷线的构筑物上，严禁架设( )未采取保护措施的设施。 A．架空线

能分泌雄性激素的器官是（）

A.甲状旁腺

B.胸腺

C.睾丸

D.垂体

E.甲状腺

工业机器人的额定负载是指在规定性能范围内（）所能承受的最大负载允许值。

A.手腕机械接口处

B.手臂

C.末端执行器

D.机座

某大学拟建设无线校园网，委托甲公司承建。甲公司的张工程师带队去进行需求调研，获得的主要信息有： 　　

校园面积约，要求室外绝大部分区域、主要建筑物内实现覆盖，允许同时上网用户数量为5000以上，非本校师生不允许自由接入，主要业务网络包括上网浏览、电子邮件、FTP， QQ等，后端与现有校园网相连，网络建设周期为六个月。 　　张工据此撰写了需求分析报告，其中最关键的部分应是（27）。为此，张工在需求报告中将会详细地给出（28）。 　　张工随后提交了逻辑网络设计方案，其核心内容包括： 　　

①网络拓扑设计 　　

②无线网络设计 　　

③安全接入方案设计 　　

④地址分配方案设计 　　

⑤应用功能配置方案设计 　　

针对无线网络的选型，最可能的方案是（29）。 　　

针对室外供电问题，最可能的方案是（30）。 　　

针对安全接入问题，最可能的方案是（31）。 　　

张工在之前两份报告的基础上，完成了物理网络设计报告，其核心内容包括： 　　

①物理拓扑及线路设计 　　

②设备选型方案 　　

在物理拓扑及线路设计部分，由于某些位置远离原校园网，张工最可能的建议是（32）。 　　

在设备选型部分，针对学校的特点，张工最可能的建议是（33）。

空白处（27）应选择（）

A．高带宽以满足大量用户同时接入

B．设备数量及优化布局以实现覆盖要求

C．安全隔离措施以阻止非法用户接入

D．应用软件配置以满足应用需求

Many theories concerning the causes of juvenile delinquency(crimes committed by young people) focus either on the individual or on society as the major contributing influence. Theories (91) on the individual suggest that children engage in criminal behavior (92) they were not sufficiently penalized for previous misdeeds or that they have learned criminal behavior through (93) with others. Theories focusing on the role of society suggest that children commit crimes in (94) to their failure to rise above their socioeconomic status, (95) as a rejection of middle, class values.
Most theories of juvenile delinquency have focused on children from disadvantaged families, (96) the fact that children from wealthy homes also commit crimes. The latter may commit crimes (97) lack of adequate parental control. All theories, however, are tentative and are (98) to criticism.
Changes in the social structure may indirectly (99) juvenile crime rates. For example, changes in the economy that (100) to fewer job opportunities for youth and rising unemployment (101) make gainful employment increasingly difficult to obtain. The resulting discontent may in (102) lead more youths into criminal behavior.
Families have also (103) changes these years. More families consist of one-parent households or two working parents; (104) , children are likely to have less supervision at home (105) was common in the traditional family (106) . This lack of parental supervision is thought to be an influence on juvenile crime rates. Other (107) causes of offensive acts include frustration or failure in school, the increased (108) of drugs and alcohol, and the growing (109) of child abuse and child neglect. All these conditions tend to increase the probability of a child committing a criminal act, (110) a direct causal relationship has not yet been established.

A．contrarily

B．consequently

C．similarly

D．simultaneously

现代国防的目标体系按范围可分为自卫、区域和全球目标，其中（）目标主要是维护国家主权。

A.全国目标

B.区域目标

C.全球目标

D.自卫目标