形成风的直接原因是[ ]
A、地转偏向力
B、水平气压梯度力
C、摩擦力
D、地转偏向力和摩擦力
答案：B
— It's burning hot today, isn't it?
— Yes.________yesterday.[ ]
A. So was it
B. So it was
C. So it is
D. So is it
冠状动脉造影所途经部位有（）
A.主动脉根部
B.桡动脉
C.股动脉
D.肱动脉
E.左、右冠状动脉口
