【判断题】同一零件的多道工序尽可能选择同一个定位基准,称为基准统一。( )
【单选题】Do you think the fish tastes _____? She cooked it _____, I think. [ ]
【多选题】导游人员送散客旅游者乘火车时应做好的工作有()。
【单选题】I think that this meal was well worth ________ was charged for it.
【单选题】I think I play basketball .
【简答题】产生焊接冷裂纹三个因素是 、扩散氢的作用和拉应力 。
【多选题】导游人员送散客旅游者乘火车时应做好的工作有( )。