检查砷盐的法定方法均需用醋酸铅棉花,其作用为() A.形成铅砷齐 B.消除药物中所含

题型:单项选择题 A1/A2型题

问题:

检查砷盐的法定方法均需用醋酸铅棉花,其作用为()

A.形成铅砷齐

B.消除药物中所含少量硫化物的干扰

C.吸收砷化氢气体

D.防止锑化氢(SbH)气体生成

E.纯化砷化氢气体

考点:主管药师药物分析药物分析题库
题型:单项选择题 A1/A2型题

中央经济工作会议指出:要着力扩大内需特别是消费需求,要刺激居民消费就必须使居民“有钱花”、 “会花钱”、“敢花钱”。这里的“有钱花”、“会花钱”、“敢花钱”涉及的因素依次是(   )

①财政收入的增加 ②居民收入的增加 ③消费环境的改善 ④消费观念的更新。

A.①②③

B.②③④

C.①④③

D.②④③

题型:单项选择题 A1/A2型题

多选:该求助者得分处于或高于84百分等级的分测验是()。

A.知识

B.领悟

C.词汇

D.填图

题型:单项选择题 A1/A2型题

阅读理解

     It is hardly surprising that clothing manufacturers (生产商)follow certain uniform standards for various

features(特征)of clothes.What seems strange,however,is that the standard adopted for women is the

opposite of the one for men.Take a look at the way your clothes button.Men's clothes tend to button

from the right, and women's from the left.Considering most of the world's population-men and women-are

righthanded,the men's standard would appear to make more sense for women.So why do women's clothes

button from the left?

      History really seems to matter here.Buttons first appeared only on the clothes of the rich in the 17th

entury, when rich women were dressed by servants.For the mostly righthanded servants,having women's

shirts button from the  left would be easier.On the other hand, having men's shirts button from the right

made sense, too.Most men dressed themselves,and a sword drawn from the left with the right hand would

be less likely to get caught in the shirt.

      Today women are seldom dressed by servants,but buttoning from the left is still the standard for them.

Is it interesting? Actually, a standard, once set, resists change.At a time when all women's shirts buttoned

from the left,it would have been risky for any single manufacturer to offer women's shirts that buttoned

from the right.After all, women had grown so used to shirts which buttoned from the left and would have

to develop new habits and skills to switch.Besides, some women might have found it socially awkward to

appear in public wearing shirts that buttoned from the right,since anyone who noticed that would believe

they were wearing men's shirts.

1.What is surprising about the standard of the clothing industry?

A.It has been followed by the industry for over 400 years.

B.It is different for men's clothing and women's.

C.It works better with men than with women.

D.It fails to consider righthanded people.

2.What do we know about the rich men in the 17th century?

A.They tended to wear clothes without buttons.

B.They were interested in historical matters.

C.They were mostly dressed by servants.

D.They drew their swords from the left.

3.Women's clothes still button from the left today because____.    

A.adopting men's style is improper for women

B.manufacturers should follow standards

C.modern women dress themselves

D.customs are hard to change

4.The passage is mainly developed by________.

A.analyzing causes

B.making comparisons

C.examining differences

D.following the time order

题型:单项选择题 A1/A2型题

慢性肾功能衰竭出现肾性骨病,主要是由于()

A.甲状腺激素分泌增多

B.甲状旁腺素的升高

C.促红细胞生成素增多

D.肾素分泌增多

E.维生素D分泌增多

题型:单项选择题 A1/A2型题

输出软片密度突然下降,分析可能是哪几方面原因造成的?

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