会议电视终端设备的组成有哪几部分？
参考答案：视频输入/输出设备、音频输入/输出设备、信息通信设备、视频编解码器、音频编解码器、多路复用/信号分接设备。
_____ has been a heated discussion over which country bakes the world’s best pizza: Italy, where pizza
began or the US, where it was globalized. [ ]
A. It
B. There
C. That
D. This
一次造成职工和居民一百人及其以上的急性中毒事故属于( )。
A．特大伤亡事故
B．急性中毒事故
C．重大伤亡事故
D．特别重大伤亡事故
