实验用含有杂质(FeO、Fe2O3)的废CuO制备胆矾晶体经历下列过程,Fe3+

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问题:

实验用含有杂质(FeO、Fe2O3)的废CuO制备胆矾晶体经历下列过程,Fe3+在PH=5时已完全沉淀,其分析错误的是  

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A.用18mol/L浓硫酸配制溶解所用4mol/L的稀硫酸,玻璃仪器一般只有3种

B.利用Cu(OH)2替代CuO也可调试溶液pH不影响实验结果

C.洗涤晶体:向滤出晶体的漏斗中加少量水浸没晶体,自然流下,重复2-3次

D.若要用实验测定所得硫酸铜晶体中结晶水的数目要用到坩埚和坩埚钳

考点:其他物质的制备(硫酸铜晶体、铁红等)
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阅读理解。

     A man has a parrot. It's blue and green. It can speak like a man. Every morning the man goes to talk with

it. But the parrot doesn't say anything to him. Then one morning the man is angry with (生气) it. He doesn't

give it any food and water. The next morning the man goes to see the parrot again. He says something to it.

But the parrot still doesn't speak. At last the man says.

     "Fool! You're a fool!" Soon he here the same words from the parrot. He laughs. He loves it very much.

It's a clever parrot.

1. What colour is the parrot?

A. Blue.

B. Green.

C. Nice.

D. Blue and green.

2. Parrots ________speak like a man.

A. can't

B. must

C. Can

D. don't

3. The man wants to ________ something with the parrot.

A. talk

B. speak

C. say

D. tell

4. Which is right?

A. The man doesn't want to see the parrot again.

B. The parrot doesn't say anything.

C. The man likes the parrot.

D. The parrot can' t speak.

5. Why does the man laugh?

A. Because he likes the parrot very much.

B. Because the parrot can speak to him.

C. Because he thinks the parrot is very clever.

D. Because he is very angry with it.

题型:不定项选择题

在下列有关知识产权的说法中,错误的是( )。

A.在我国,知识产权是著作权、专利权、商标权和其他智力成果权的总称

B.知识产权一词是外来语

C.知识产权的客体是智慧产品,这种成果无须具有为人所感知的客观形式

D.知识产权具有地域性

题型:不定项选择题

滚翻式货舱盖开舱时,在盖板进入舱口端收藏坡道后盖板便:()

A.顺序纵向叠加

B.顺序横向并靠

C.自动水平堆积

D.翻转成直立状态存放

题型:不定项选择题

2002年建设银行在全国开始实施个人住房贷款()品牌战略,并率先推出公积金委托提取还贷业务。

A.“乐当家”

B.“乐有家”

C.“乐得家”

D.“房易安”

题型:不定项选择题

信息技术没有改变人们关于学习和教育的观念。( )

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