小儿腹泻时口服补液盐(ORS液)的电解质渗透压是含钠钾液的() A.1/4张 B.1

题型:单项选择题

问题:

小儿腹泻时口服补液盐(ORS液)的电解质渗透压是含钠钾液的()

A.1/4张

B.1/3张

C.2/5张

D.1/2张

E.2/3张

考点:北京住院医师公共卫生学Ⅰ阶段北京住院医师公共卫生学(综合练习)北京住院医师公共卫生学(综合练习)题库
题型:单项选择题

阅读理解。

     Before you to another country it is a great help if you know the language and some of the customs

(风俗) of the country.

     When people meet each other for the first time in Britain, they say "How do you do?" and shake

hands(捏手). Usually they do not shake hands when they just meet or say goodbye. But they shake

hands when they haven't met for a long time or when they will be away from each other for a long time.

      Last year a group of German students went to England for a holiday. Their teacher told them that

the English people hardly ever shake hands. So when they met their English friends at the station,  they

kept their hands behind their backs. The English students had learned that the Germans shake hands as

often as possible, so they put their hands in front and got ready to shake hands with them. It made both

of them laugh.

根据短文内容,选择正确答案。  

1.It is      _ if you know the language and some of the customs of a country before you pay a visit to that country.        

A. not useful                

B. not helpful

C. very helpful              

D. very bad    

2. English people usually shake hands when they     __.      

A. meet every time

B. meet for the first time

C. say goodbye to each other

D. say hello to each other    

3. Usually, English people don't shake hands       __.        

A. when they will be away for a long time

B. when they say "How do you do?"

C. when they just meet or say  goodbye

D. when they haven't met for a long time  

4. Which is RIGHT?       

A. German people shake hands as often as possible.

B. English people like shaking hands very much.

C. German people hardly ever shake hands.

D. Both English people and Germans don't like shaking hands.

5. This story is about__      .

A. shaking hands

B. languages

C. customs

D. languages and customs

题型:单项选择题
已知椭圆是以二次函数y=-
1
8
x2+2
的图象与x轴的交点为焦点,以该函数图象的顶点为椭圆的一个顶点.
(1)求椭圆的标准方程;
(2)椭圆上位于第一象限内的一点P的横坐标为
15
,,求△PF1F2面积.(F1、F2分别椭圆的两个焦点).
题型:单项选择题

我国现行建筑安装工程费用项目组成中,直接工程费包括()。

A.人工费

B.材料费

C.模板及支架费

D.施工机械使用费

E.已完工程及设备保护费

题型:单项选择题

最适于分析含挥发油及其他挥发性组分的中药和中成药的方法是()

A.薄层色谱法

B.气相色谱法

C.高效液相色谱法

D.电泳色谱法

E.生物活性测定法

题型:单项选择题

液压泵的形式有哪些?

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