维生素K对下列哪种出血无效：
A．香豆素过量出血
B．纤溶亢进引起的出血
C．梗阻性黄疸引起出血
D．阿司匹林所致出血
E．新生儿出血
参考答案：B
My hometown has taken on a new look. ___________!
A．Great changes have been taken place
B．What great change
C．How it has changed
D．How great it has changed
古潜山油气藏属于（）。
A、层状油气藏
B、块状油气藏
C、断层油气藏
D、不规则油气藏
