前壁心肌梗死合并房室传导阻滞表明()
A.梗死面缩小
B.心肌损伤缓解
C.病情缓解
D.梗死范围广泛
E.心肌缺血加重
参考答案:D
Never_____ to the foreign invaders, no matter how powerful they seem to be.
A.we can give in
B.we should give up
C.can we give in
D.should we give up
若aAn+与bBz-两种离子的电子层结构相同,其核外电子数为x,则下列说法正确的是:
A a=b B a-n=b+z C b= x+z D a=x+z