关于M型超声心动图二尖瓣前叶波群,以下哪项不正确()。
A.正常人呈双峰型
B.E峰位于舒张早期
C.A峰位于舒张晚期
D.CD段位于舒张中期
E.收缩期呈一平直向上的曲线
参考答案:D
What a pity! Considering his ability and experience, he ____ better.
A.need have done
B.must have done
C.can have done
D.might have done
进行APTT检测时,适宜的采血量是:()
A.0.1ml
B.0.2,ml
C.0.3ml
D.0.4ml
E.0.5ml