题型:问答题 简答题 Recently I bought an ancient Chinese vase, ________ was reasonable.[ ]A. which price B. the price of which C. its price D. the price of whose 查看答案
题型:问答题 简答题 关于KOH溶液和Fe(OH)3胶体描述正确的是 [ ]A.两者的分散质都属于碱 B.两者均为有色不透明的分散系 C.两者分散质的直径都介于10-9 ~10-7 m之间 D.一束光线分别通过时,两者都会出现明显的光带 查看答案