后囟由哪几片颅骨组成()
A.2片顶骨,2片额骨
B.2片顶骨,1片枕骨
C.2片额骨,1片枕骨
D.2片颞骨,2片枕骨
E.2片顶骨,2片枕骨
参考答案:B
强心苷类药物可用于治疗以下心律失常如
A.心房纤颤
B.心房扑动
C.阵发性室上性心动过速
D.室性心动过速
E.心室纤颤
Erosion that is a slow process, but it constantly changes the features on the surface of the earth.
A.which is
B.although
C.being
D.is