【简答题】主要的系统容错和灾难恢复方法有三种:_______,_______,_______。
【单选题】治疗蕈状溃疡的首选药物是(2013真题28)
【单选题】编辑骨骼动画时,如果在某一编辑了对象的动作,将出现什么帧?
【单选题】The Chinese are looking forward to the first ______ to land on the moon after launching the first lunar exploration satellite,Chang'e1,successfully.