内生软骨瘤好发部位是( )
A.股骨管状骨B.胫骨管状骨C.肱骨管状骨D.肋骨E.指骨管状骨
参考答案:E
解析: 内生软骨瘤属良性肿瘤,好发于手和足的管状骨(E项)的干骺端。
This kind of social phenomenon could exist only for a few months, but it will disappear _____. [ ]
A. in no time
B. on the time
C. at a time
D. at one time
在手机开发中常用的数据库是()
A.SQLite3
B.Oracle
C.Sql Server
D.Db23