【单选题】与关系表达式 x==0 等价的表达式是( )
【判断题】按原材料的投料进度把在产品数量折合成相当于产成品的数量,即为在产品约当产量。
【单选题】一 What attracted you to our university? 一 You have a great basketball team and I can _____ for it. [ ]
【单选题】--- What attracted you to our university? --- You have a great basketball team and I can _______ for it.
【判断题】对于组播MAC地址,第一个字节的最后一位固定为0.