寒湿泄泻的特点是A.大便清稀,甚如水样 B.大便溏泻,完谷不化 C.大便溏垢,臭如败

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问题:

寒湿泄泻的特点是

A.大便清稀,甚如水样

B.大便溏泻,完谷不化

C.大便溏垢,臭如败卵

D.大便黄褐,气味臭秽

考点:普通考研中医综合中医综合
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欧洲是经济________地区,经济发展水平居各大洲第_____位。

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(4分)现有m g某气体,它由四原子分子构成,它的摩尔质量为M g/mol.则:

(1)该气体的物质的量为________mol。

(2)该气体中所含的原子总数约为                   个。

(3)该气体在标准状况下的体积为________L。

(4)该气体溶于水后形成V L溶液,其溶液的物质的量浓度为________mol/L。

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After several days’ warm weather around the New Year’s Day,a strong cold wave with a sandstorm from Mongolia attacked Tianjin Sunday afternoon.

From 3 o’clock p.m.,the strong cold wave from Mongolia engulfed(吞没)most areas of North China and the biggest wind-force was 7.Tianjin also suffered this year’s first sandstorm with the cold wind whistling.The sky became dusky and the air was permeated with sand.By 11 o’clock at night,the wind became weaker and the sandstorm died down.From Monday morning,the northern areas had a big drop in temperature.It is learned that flu and the infection of the upper respiratory tract are easy to be infected due to the severe pollution by dust in the air.Relevant experts remind residents to pay attention to their health care.

小题1:.The underlined word“permeated”most probably means______.

A.cleared

B.filled      

C.blowing     

D.replaced小题2:We learn that ______from the passage.

A.sandstorms result in the fall of temperature

B.we can easily get infected by the dusty air

C.it is usually warmer before sandstorms come

D.sandstorms usually come around the New Year’s Day

题型:单项选择题

业已证实,全麻药可使脑中的cAMP的含量增加,其机制可与下列哪些因素有关()

A.激活磷酸二酯酶的活性

B.激活腺苷酸环化酶的活性

C.抑制腺苷酸环化酶的活性

D.抑制磷酸二酯酶的活性

E.对腺苷酸环化酶及磷酸二酯酶的活性无影响

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(15分) 某同学设计了如下图所示装置(部分夹持装置已略去),该装置可以用来进行多项

实验研究。

请回答:

(1)用上述装置探究影响化学反应速率的因素。

①圆底烧瓶中发生反应的离子方程式是      

②用上述装置进行实验,以生成9.0 mL气体为计时终点,结果为t1>t2

序号V(H2SO4)/mLc(H2SO4)/mol·L-1t/s
401t1
404t2
 

比较实验Ⅰ和Ⅱ可以得出的实验结论是      

③若将锌片换成含杂质的粗锌片,且控制其他条件使其与上述实验完全一致,所测得的反应速率均大于上述实验对应的数据。粗锌片中所含杂质可能是(填序号)      

a.石墨        b.银      c.铜          d.沙粒(二氧化硅)

(2)用上述装置测定粗锌片的纯度。

①连接好装置,检查装置气密性,称量粗锌片mg置于圆底烧瓶中,滴加足量稀硫酸,充分反应直至不再产生气体为止,测得气体体积为VL,则粗锌片的纯度为      

②本实验在读数前对量气管的操作是      

③本套装置中若考虑滴入的稀硫酸的体积(假设其它操作都正确),则测得的气体的体积将      。(填“偏大”、“偏小”或“无影响”,)

(3)用上述装置验证生铁在潮湿空气中会发生吸氧腐蚀。

①圆底烧瓶中的试剂可选用(填序号)      

a.NH4Cl溶液       b.C2H5OH           c.Na2CO3溶液       d.稀硫酸

②能证明生铁在潮湿空气中会发生吸氧腐蚀的现象是      

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