[单选题]( )A.13B.7C.0D.-6
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.再生障碍性贫血B.缺铁性贫血C.巨幼细胞贫血D.B-型地中海贫血
[单选题]A.再生障碍性贫血B.缺铁性贫血C.巨幼细胞贫血D.B-型地中海贫血
[单选题]A.收缩降低B.舒张减慢C.收缩增强D.舒张增快E.传导增快
[单选题]A.0.1%B.0.05%C.0.5%D.5%E.1%
[单选题]A.收缩降低B.舒张减慢C.收缩增强D.舒张增快E.传导增快