目前我国IN上开办了多个智能业务,其中俗称为“800”的业务是()业务。
A、记帐卡呼叫
B、被叫集中付费
C、虚拟专用网
D、广域集中用户交换机
参考答案:B
In relation to corporate governance:
(b) Describe the factors upon which the corporate governance of a company in the Hong Kong Special Administrative Region is based. (7 marks)
风电的优点有哪些()
A、在陆地上或海上都能建设
B、运行和维护成本低
C、无温室气体排放
D、增加了国家能源生产的多样化