【简答题】Whenever the nurse came into the ward, the Marine was there, but he took no notice of her and the night noises of the hospital — the clanking of an oxygen tank, the laughter of night-staff members exc...
【简答题】下图所示的仪器名称是 。 A B C D 该仪器是初中化学实验中最常见的仪器,在不同的化学实验中容器口的朝向有所不同。若选用装置A,配合其它仪器和用品,可以完成的实验有 (填序号)。①氯酸钾、二氧化锰加热制氧气 ②高锰酸钾加热制氧气 ③双氧水制氧气 ④石灰石和稀盐酸制二氧化碳 ⑤碳还原氧化铜