【判断题】行包安检员的冬装应系好风纪扣,戴棉帽或春秋帽,衬(毛)衣领须为深色,衣领必须高于外衣领;
【简答题】电扶梯系统包括:电梯、()、轮椅升降台。
【简答题】CO 2 饱和点(CO 2 saturation point)
【判断题】The light saturation point of c3 plants such as rice and wheat is usually greater than that of C4 plants at same co2 concentration condition.