【单选题】According to the passage, which of the following is NOTone of teh advantages of this system?
D.
It doesn't require major changes to the house.
【单选题】假设有商店表,查询在“北京”和“上海”区域的商店信息的正确命令是____________。
A.
select * from 商店 where 区域名='北京' or 区域名='上海'
B.
select * from 商店 where 区域名='北京' or '上海'
C.
select * from 商店 where 区域名='北京' and '上海'
D.
select * from 商店 where 区域名='北京' and 区域名='上海'
【简答题】According to teh writer, what is the great function of intercultural understanding?
【单选题】下列关于宫缩乏力导致产后流血的特征描述正确的为