高血压合并下列哪种疾病时,最适合用β受体阻滞剂治疗()
A.心动过缓
B.支气管哮喘
C.急性左心衰竭
D.二度房室传导阻滞
E.肥厚型梗阻性心肌病
参考答案:E
设矩阵A=
,矩阵X满足A*X=A-1+2X.其中A*是A的伴随矩阵.求矩阵X.
He to Dongying many times, so he knows every corner of it.
A.went
B.will go
C.has gone
D.has been