代表心室除极波形的是()
A.P波
B.QRS波群
C.S-T段
D.T波
E.Q-T间期
参考答案:B
— _____________ any books on the shelf?
— Yes, _____________.[ ]
A. Is there; there is
B. Are there; there are
C. Is there; they is
一时性心肌供血不足可引起()。
A.缺血性心肌病
B.隐匿性冠心病
C.心肌梗死
D.心绞痛
E.猝死