就显效和维持时间而言,拮抗肌松药的最佳组合是()
A.依酚氯铵和胃长宁
B.依酚氯铵和阿托品
C.新斯的明和阿托品
D.吡啶斯的明和阿托品
E.以上均否
参考答案:B
读答句,写问句。
1. A:____________________________?
B: I am drawing pictures.
2. A:___________________________?
B: I often play football on weekends.
3. A:____________________________?
B: I have Chinese class at 9:50.
4. A:____________________________?
B: My favourite month is July.
5. A:____________________________?
B: My mother's birthday is in March.
从工作性能上看机床液压传动的缺点是:()
A.调速范围小
B.换向慢
C.传动效率低
D.驱动力大