试题与答案

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+

题型:不定项选择题

题目:

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  

[ ]

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

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析:寿险需求确定的程序为:收集信息--建立目标--信息分析。

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题型:阅读理解

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.

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