A:be referred to be bought
B:be referred to being bought
C:referred to be bought
D:referred to being bought
掌握常用仪器的特征和用途,有利于开展化学学习和研究.请从下列常见仪器示意图中,选择适当的字母序号填空.(1)能用酒精灯直接加热的仪器____;(2)过滤时所用到的玻璃仪器____;(3)用排水法收集一瓶氧气需要用到的仪器____;(4)溶解、过滤、蒸发操作中都用到的仪器____.