煅烧
参考答案：
就是各种炭素材料在隔绝空气的条件下进行高温预热处理。
I will pay _______ I can afford for the present.
A what I think B what do I think C when I think D when do I think
初步考虑为()
A．子宫颈粘连
B．子宫发育不良
C．子宫内膜结核
D．子宫内膜异位症
E．子宫内膜炎
