正确答案: ABC

调查准备阶段 调查实施阶段 分析与研究阶段

题目：属于市场营销调查的步骤有（）。

解析：ABC

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举一反三的答案和解析：

[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。

BTS

MS

VLR

解析：B,C,D

[多选题]电信通信全程全网的特点决定了电信科技人员必须从社会整体利益的高度出发，正确对待电信科学技术的（）和发明创造。

发展

应用

交流

传播

解析：ABCD

[多选题]铅酸蓄电池极板硫化的主要原因是()。

过量放电

极板露出液面

电解液含杂质

充电不足

解析：ABCD

[单选题]通信科技人员职业道德的两重性是指通信科技人员在职业活动中，应遵循（ ）

科技工作者和通信工作者的职业道德

[单选题]传播模型测试中，测试站点应高于周围建筑物，但不能高出太多，平均高度高()层楼为宜。

2～3

[单选题]长途数字电话网由DC1和DC2两级长途交换中心构成，DC1为省级交换中心，DC1之间以（15 ）相互连接，DC1与本省内各地市的DC2以（16）连接。[1分]

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