常见的颅壁压迹有()
A.导静脉压迹
B.脑回压迹
C.脑膜中动脉压迹
D.蛛网膜颗粒压迹
E.大脑中动脉
参考答案：A, B, C, D, E
I recognized her as soon as I met her at the airport though we hadn' t seen each other for ages
and she had changed _________.[ ]
A. a large amount
B. a great many
C. a great deal
D. a great deal of
氨空比每提高1%，氧化炉温大约提高（）℃左右。
A.40
B.50
C.70
D.80
