【简答题】徐变主要是由混凝土中______所引起的,它产生于______和______,故在其它条件相同时,水泥用量越多,徐变值______;水灰比愈大,徐变值越______。
【判断题】从上海到西安探亲,乘坐火车这种交通方式比较合适。
【判断题】Many businesses have shifted their base to the newly developed areas now.
【简答题】Many businesses have been closed as aresult of the economic ________.A. er B. cr C. situation D. collapse
【简答题】Many businesses have replaced cash registers with point-of-sale (POS) terminals.
【简答题】Many businesses have because of the recession.
【判断题】当路基土石方施工中,移挖作填或借土填筑路堤时,不用考虑定额中所规定的换算系数。