下列不符合右心室肥厚心电图表现的是()。
A.V1导联R/S≥1
B.R5>2.5mV
C.QRS电轴≥90°
D.RaVR>0.5mV
E.aVR导联R/S≥1
参考答案:B
细胞因子受体由_________、_________和_________组成。
. I’m afraid I’ll turn to Prof. Timlingson. It is .
A.too difficult a problem
B.a too difficult problem
C.such difficult problem
D.a so difficult problem