下列化学方程式或电离方程式书写完全正确的一组是( ) A.Fe2(SO4)3=3

题型:选择题

问题:

下列化学方程式或电离方程式书写完全正确的一组是(  )

A.Fe2(SO43=3Fe3++2SO4 2-

B.NaHSO4=Na++H++SO4-

C.2NaOH+CuSO4=Cu(OH)2↓+Na2SO4

D.Fe+2AgCl=FeCl2+2Ag

考点:化学反应方程式的书写文字表达式
题型:选择题

阅读理解

     Mary is an American schoolgirl. She is now in Beijing with her parents. She doesn't

know Chinese, but she is trying to study and speak it. She often tries to speak Chinese

to her Chinese friends. Sometimes they don't understand her, because she can't speak

Chinese well.

     It's Saturday morning. Mary goes out. She is on her way to the park. She is going

there to see a flower show. But she doesn't know how to get there. She asks a Chinese

boy. The boy can't understand her. Then she takes out a pen and some paper. She draws

flowers on it, gives the picture to the boy and says something about it. The boy smiles and

then shows Mary the way to the park.

1. Where does Mary live now? She lives in __________.

A. China

B. England

C. America

D. Canada

2. Where is she going?

A. To a new school.

B. To see her friends.

C. To a farm.

D. To see some flowers.

3. How does she ask the way to the flower show?

A. She asks the way in English.

B. She asks the way in Chinese.

C. She draws a picture to ask the way.

D. She doesn't ask any people.

题型:选择题

某背书人在作票据背书转让时,遗漏了()而票据转让依然有效。

A、被背书人名称

B、背书人签章

C、背书日期

D、转让条件

题型:选择题

某温度下,将Cl2通入NaOH溶液中,反应得到NaCl、NaClO、NaClO3的混合溶液,经测定ClO与ClO3的浓度之比为1∶3,则Cl2与NaOH溶液反应时参加反应的Cl2与被氧化的氯气的物质的量之比为[ ]

A.21∶5  

B.11∶3

C.3∶1  

D.5∶1

题型:选择题

5岁女孩,颜面四肢浮肿2月,血压120/80mmHg,査尿常规:蛋白(+++),红细胞15个/HP,血总蛋白40g/L,白蛋白25g/L。该患儿最可能的诊断是

A.急性肾炎

B.慢性肾炎

C.单纯性肾病综合征

D.肾炎性肾病综合征

E.急进性肾炎

题型:选择题

下列关于ELISA说法正确的是()

A.酶作用于TMB后发生颜色变化

B.封闭是为了抑制固相化抗原或抗体的活性

C.双抗体夹心法可以用来检测未知抗体

D.蛋白酶是其标记酶

E.结合酶标测定仪做定量分析

更多题库