实验室用高锰酸钾制取氧气的实验中,不需要使用的一组仪器是( )
A:大试管、集气瓶
B:烧杯、玻璃板
C:酒精灯、铁架台
D:导气管、单孔塞
Suggested questions:
①How many class rules do you have?
②What must you do in the class?
③What mustn't you do in the class?