弱酸性药物水杨酸的pKa为3.0,在胃(pH=1.0)中,水杨酸分子型所占的比例为(

题型:单项选择题 A1/A2型题

问题:

弱酸性药物水杨酸的pKa为3.0,在胃(pH=1.0)中,水杨酸分子型所占的比例为()

A.1%

B.50%

C.99%

D.90%

E.10%

考点:初级药士药剂学药剂学题库
题型:单项选择题 A1/A2型题

根据短文内容判断下列句子正(T)误(F)。

     My name is David Black. I am an English boy. My family are in Beijing. My father and mother work there.

My father is an engineer (工程师) and my mother is a teacher. I have sister but no brothers. My sister and I

are students of a middle school in Beijing. We love China. We have a nice house in Beijing. We have a TV and

a Computer. My room is big. There is a bed, a desk and two chairs in it. My books are on the bookcase. I have

a phone on my desk. There are some pictures on the wall. I like my room and I like these pictures very much,

too.

( )1. There are four people in David's family.        

( )2. Mr and Mrs Black have a son and a daughter.     

( )3. Darid's mother works in a school in Beijing.    

( )4. There are two desks and a chair in David's room.

( )5. There is a radio on David's desk.               

题型:单项选择题 A1/A2型题

物体从高处某一点自由下落,中间某1秒内的平均速度是35m/s,问:

(1)这1秒内的位移是多大?

(2)这1秒是物体开始自由下落后的第几秒?

(3)这1秒末物体速度为多大?

题型:单项选择题 A1/A2型题

在离心式压气机中,实现动能变为压力能的主要部件是()。

A.叶轮

B.扩压器

C.进气道

D.排气蜗壳

题型:单项选择题 A1/A2型题

加入两个突变的噬菌体都不能在E.coliK菌株上,但是它们同时感染一个E.coliK时,可以生长,那么这两个突变体是()

A.互补

B.突变在同一基因内

C.突变在不同基因内

D.A与C正确

E.都正确

题型:单项选择题 A1/A2型题

社区巡视监督的主要内容包括哪几个方面?

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