关于缓、控释制剂的特点，以下描述正确的有 A．减少给药次数，

搜题请搜索小程序“爱下问搜题”

问题多项选择题

关于缓、控释制剂的特点，以下描述正确的有

A．减少给药次数，提高病人的服药顺从性

B．半衰期太短或太长的药物都不适宜设计成缓、控释制剂

C．血药浓度降低，有利于降低药物的毒副作用

D．易于调整剂量

E．血药浓度平稳，避免或减少峰谷现象

答案

参考答案：A,B,E

解析：释制剂的主要特点：优点①可以减少给药次数，方便使用，从而大大提高病人的服药顺应性，特别适用于需要长期服药的慢性病病人。②血药浓度平稳，避免或减小峰谷现象，有利于降低药物的毒副作用。③减少用药的总剂量，可用最小剂量达到最大药效。缺点：①调整剂量困难；②不能灵活调节给药方案；③产品成本较高，价格较贵。

单项选择题

心脏停搏时间是指从循环停止到

A．意识恢复
B．自主呼吸恢复
C．心脏自动节律恢复
D．重建有效人工循环
E．呼吸心跳恢复正常

查看答案

完形填空

完形填空。
It is interesting how NASA (美国航空航天管理局) chose their astronauts (宇航员) for landing them on the moon. They chose men__1__ the age of twenty and thirty-five. There were about fifty of them. Many were__2___air pilots.__3__were scientists with two or three degrees. NASA telephoned each man they were going to choose, told them the plans and the__4__they might get in. They then asked him if he was willingto be trained as an astronaut. "How could any man__5__such an exciting job?" one of them said. "Dangerous? Of course, it's dangerous,__6__most exciting! " The health and physical condition of __7__was, of course, very necessary.__8__those in very good health and physical condition were chosen. While being trained to be astronauts, they went through many__9__. They studied the stars and the moon, and they also studied geology, the science of rocks. This was necessary__10__astronauts would have to look for rocks on the moon. They would try to find rocks which might help to tell the__11__of the moon. They were all__12__to fly in helicopters. These helicopters landed__13__down to give them some experience of the way the spaceship would.__14__land on the moon. They were also taught all the__15__ facts about the conditions. They learnt all the technical details of the spaceships and rockets. They visited the scientists and engineers who__16__them. They visited the factories where they were__17__.They learnt how every__18__of a spaceship and its instruments work. They also learnt every detail of ground-control__19___. In a word, to be chosen as an astronaut, one must be in good health,__20__in science and good at piloting.
( )1.A. at ( )2.A. experienced ( )3.A. None ( )4.A. danger ( )5.A. accept ( )6.A. but ( )7.A. the scientists ( )8.A. As ( )9.A. jobs ( )10.A. for ( )11.A. story ( )12.A. shown ( )13.A. straight ( )14.A. possibly ( )15.A. not known ( )16.A. drew ( )17.A. repaired ( )18.A. part ( )19.A. house ( )20.A. well-done	B. between B. old B. Few B. sadness B. receive B. if B. men B. Only B. places B. because B. background B. trained B. straightly B. likely B. well-known B. produced B. built B. movement B. stop B. well fed	C. of C. trained C. Others C. hardship C. offer C.though C. pilots C. If C. courses C. since C. age C. told C. indirectly C. actually C. unknown C. designed C. developed C. machine C. system C. well-kept	D. on D. young D. They D. troubles D. refuse D.however D. young people D. Or D. ways D. so that D. name D. let D. directly D. really D. known D. made D. fixed D. body D. station D. well-informed

查看答案