陈旧性骨折是指：
A．伤后一周内就诊者
B．伤后2～3周后就诊者
C．超过骨愈合时间者
D．骨折不愈合者
E．既往有骨折者
参考答案：B
--Have you _____ the invitation to the party? --Yes, I have. And I've ______ it.
A．accepted, received
B．received, accepted
C．received, received
D．accepted, accepted
电力生产的特点是什么？
