【单选题】About one third of the population in Beijing and Shanghai ______ netizens, but in poorest areas, only three or four percent ______ online.
【单选题】旨在逐步实现国际私法冲突规范统一的政府间国际组织是______
【简答题】What accounts for the high drop-out rates for onlBy almost any measure , there is a boom in Internet-based instruction . In just a few years , 34 percent of American universities have begun offering s...
【单选题】质子交换膜燃料电池的工作温度低于()°C,是电动汽车的理想动力电源。
【简答题】质子交换膜燃料电池的工作温度低于_________________。是电动汽车的理想动力电池。
【单选题】It is onl y _____from my home to the train station.
【判断题】剪式举升机在举升至操作位置后,不需要锁止并关闭控制面板上的电源开关