新斯的明治疗重症肌无力的作用机制包括:()
A、抑制胆碱酯酶
B、兴奋N1受体
C、兴奋N2受体
D、A和C
E、B和C
参考答案:D
由于大动脉弹性减退,脉搏传导速度增快,反射波抵达中心大动脉的时相从舒张期提前到收缩期,出现收缩期延迟压力波峰。试分析可导致什么变化()
A.舒张压升高
B.脉压增大
C.舒张压降低
D.收缩压升高
E.脉压不变
A: I’m awfully sorry. I hope I haven’t spoiled it.B: ().
A. Oh, it’s nothing. Don’t let a little thing like that worry you.
B. I know you are unintentional. Just be more careful next time.
C. There is no need for you to say sorry. Anyway, I can buy a new one.
D. You are right. You haven’t spoiled it. You see, it’s still in good condition.