我国在一些沿海经济特区,由外国投资兴建的工程项目逐渐全面地展开,特别是高层公共建筑正在迅速发展,其中也有不少是高层住宅建筑设计,对室内公共设施例如:电气、空调、煤气、消防、供水等都提出一系列要求,特别对弱电设计提出与国内目前一般高层住宅设计不同的要求。例如大楼里除装有电话、电视共用天线接收系统外,还装有客访扩音对讲系统,客访保安用闭路电 In some coastal special economic zones in China, project projects built by foreign investment have gradually started. Especially high-rise public buildings are developing rapidly. Many of them are high-rise residential building designs, such as electrical, air-conditioning, and gas. Firefighting, water supply, etc., all put forward a series of requirements, especially for the design of weak currents and the different requirements of the domestic general high-rise residential design. For example, in addition to a telephone and TV antenna receiving system installed in the building, a guest-speaking speaker intercom system is also installed, and closed-circuit electricity for guest security is used.