下列选线中 属于数据库管理软件的是（）。

计算机唯一可以识别并执行的语音是（）。

在通信专业中，MAC 的英文全称是（），调制的英文通常翻译为（）。

In the twenty-first century, broadband networks need to be considered as basic critical（）like roads, railways, water, and power networks.

In addition mobile users also expect to connect to the （） for communications and access to services （） the best suitable connection,any where and at anytime.

The exponential growth of mobile broadband traffic is certainly （） by both, the increasing demand for known and new data services,such as mobile internet access, social networking,location-based services/personal navigation and so on, and the data （） and storage capabilities of state-of-the-art terminals, such as smartphones and the most recent tablets.