【名词&注释】
可扩展性(scalability)、同轴电缆(coaxial cable)、数字信息(digital information)、接地系统(grounding system)、语音信箱(voice mail)、号码百事通、视觉器官(visual organ)、公用电话(public telephone)、参考答案、集团电话(telephone managing)
[单选题]中国电信的号码百事通业务可供用户拨打特定号码查询餐饮、娱乐、家政等生活信息，这是一种（ ）业务。
A. 公用电话(public telephone)
B. 集团电话(telephone managing)
C. 语音信箱
D. 电话信息服务
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举一反三：
[多选题]接地系统通常由（ ）部分组成。
A. 接地体
B. 接地引入线
C. 接地汇接线
D. 接地线
[单选题]图像是当光辐射能量照在物体上经过反射或透射，或由发光物体本身发出光的能量，在人的视觉器官(visual organ)中所重现出的物体的（61） 。
A. 灰度信息
B. 模拟信息
C. 数字信息
D. 视觉信息
[多选题]电子商务具有高效性、（）和协作性的特性。
A. 安全性
B. 可扩展性
C. 集成性
D. 方便性
[多选题]【An overall cellular network contains a number of different elements from the base transceiver station (BTS) itself with its antenna back through a base station controller (BSC), and a mobile switching centre (MSC) to the location registers (HLR and VLR) and the link to the public switched telephone network (PSTN). Of the units within the cellular network, the BTS provides the direct communication with the mobile phones. There may be a small number of base stations then linked to a base station controller. This unit acts as a small centre to route calls to the required base station, and it also makes some decisions about which of the base station is best suited to a particular call. The links between the BTS and the BSC may use either land lines of even microwave links. Often the BTS antenna towers also support a small microwave dish antenna used for the link to the BSC. The BSC is often co-located with a BTS. The BSC interfaces with the mobile switching centre. This makes more widespread choices about the routing of calls and interfaces to the land line based PSTN as well as the HLR and VLR.】 From the paragraph above, in a cellular network, the （98） can provide direct communication with a mobile phone, the （99） acts as a small centre to route calls to the required base station, and it also makes some decisions about which of the base station is best suited to a particular call.（100） can be used to link the BSC with related BTS。
A. BS
B.
C. BTS
D. MS
E.
F. VLR
[单选题]在下列IP地址中，只有（28）是正确的，其掩码是（29）。
A. 193.131.027.18
B. 132.8.17.85
C. 75.28.301.20
D. 221.23.14.8.67
[单选题]weblogic是遵循哪个标准的中间件 ()
A. DCOM
B. J2EE
C. DCE
D. TCPIP
[多选题]典型的数字信道有（）和无线信道等。
A. 数字微波
B. 同轴电缆
C. 光纤
D. 卫星信道
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