临床上85%~90%的颅内动脉瘤位于前循环,后循环动脉瘤常见于()
A.桥脑动脉
B.小脑后下动脉和基底动脉尖
C.小脑上动脉
D.枕动脉
E.小脑前下动脉
参考答案:B
A.经济手段 B.金融手段 C.行政手段 D.法律手段
Little what you said. I wish you had repeated it!
A.did I understand
B.I understood
C.I did understand
D.have I understood