不是舒张性心力衰竭特点的是()。
A.左心室舒张期充盈降低
B.左心室射血分数降低
C.心肌顺应性下降
D.超声心动图E峰
E.心腔大小可正常
参考答案:B
--- Jack will come to see you next Friday. Do you prefer the morning or the afternoon?
--- ________, the evening would be better. You know, everyone will be free then.
A.None
B.Either
C.Both
D.Neither
银汞合金的最佳塑型时间为
A.1~15分钟
B.5~15分钟
C.15~20分钟
D.20~25分钟
E.20分钟以后