糖尿病眼底病变中,出现哪一种情况最易引起失明
A.微血管瘤
B.新生血管形成破裂
C.硬性渗出物
D.软性渗出物
E.视网膜出血
参考答案:B
—Welcome to our school.
—Thank you.
—_________ .[ ]
A. Thank you.
B. No thanks.
C. You're welcome
指点信标工作频率为()。
A.108.10~111.96MHz
B.329.15~336MHz
C.118.10~136.976MHz
D.75MHz