—What's his name? — .[ ]
A. Hi
B. His name John
C. His name is John
答案：C
完全型心内膜垫缺损引起的改变是（）。
A.共同房室瓣的反流
B.二尖瓣口反流
C.三尖瓣口反流
D.主动脉瓣口反流
E.主动脉根部瘤样扩张
风电场技术主要向哪个方向发展？
