氨力农的作用机制为（）
A.乙酰胆碱酯酶
B.β-内酰胺酶抑制剂
C.环氧酶仰制剂
D.磷酸二酯酶抑制剂
E.血管紧张素转化酶抑制剂
参考答案：D
Which sentence has a different meaning from the others? [ ]
A. Not all the shops here sell drinks to teenagers.
B. All the shops here don't sell drinks to teenagers.
C. Teenagers can't buy drinks from every shop here.
D. Teenagers can't buy drinks from any shop here.
简述转向架一，二系弹簧悬挂装置。
