房间隔缺损的血流动力学改变常引起( )
A.左心房、左心室扩大B.右心房、右心室扩大C.右心房、左心室扩大D.左心房、右心室扩大E.全心扩大
参考答案:B
I have never been to Beijing, but it is the place _____.
A.that I want to visit it most
B.where I’d like to visit
C.in which I’d like to visit
D.I most want to visit
车辆维护作业包括()等。
A.清洁、检查;
B.补给、润滑;
C.紧固;
D.调整。