《医疗器械经营企业许可证》项目的变更分为许可事项变更和（ ）变更。
D
暂无解析
下列词语书写完全正确的一项是 ()
-How do you like this piece of music by Tan Dun?
-Well, of all the music that he has written, I think this is his_______ one.
--- Whose French book is it?
--- It __________ be Lucy ’s. Look! Her name is on the book!
下列溶液中能分别跟盐酸、碳酸钠溶液、氯化铜溶液反应，并产生不同现象的是()
下列物质的用途，既利用了物质的物理性质又利用了化学性质的是（）