【題目】配制溶液時,下列溶劑中最常用的是( )

A.酒精 B.水 C.汽油 D.植物油

【答案】B

【解析】

試題分析:對初中的知識范圍來說,溶劑都是液體,水是最常用的的溶劑,酒精、汽油也是常用的溶劑,植物油一般不作為溶劑。故選B

練習冊系列答案
相關習題

科目:初中地理 來源: 題型:

【題目】下表記錄了物質X的溶液分別加入到另外三種物質的溶液中產(chǎn)生的現(xiàn)象。則物質X的化學式可能是( )。

物質

氫氧化鈉

碳酸鈉

石蕊

現(xiàn)象

無明顯現(xiàn)象

產(chǎn)生氣泡

溶液變紅

A.Ca(OH)2 B.CuSO4 C.HCl D.KCl

查看答案和解析>>

科目:初中地理 來源: 題型:

【題目】 __________ does Bill feel?

He is worried.

A. What B. How C. Where D. Who

查看答案和解析>>

科目:初中地理 來源: 題型:

【題目】化工生產(chǎn)中為了加快反應速率,常常先把反應的固體配成溶液再兩兩混合。

(1)在農(nóng)業(yè)上,為了合理使用農(nóng)藥,常把不溶于水的固體或液體農(nóng)藥配成 _________ _________ ,用來噴灑受病蟲害的農(nóng)作物。

(2)用X射線檢查腸胃病時,醫(yī)生會讓病人服用鋇餐來輔助檢查,鋇餐就是

硫酸鋇 (溶液、懸濁液、乳濁液)。

查看答案和解析>>

科目:初中地理 來源: 題型:

【題目】This is __________ room. My hat is on the chair.

A. I B. your C. he D. my

查看答案和解析>>

科目:初中地理 來源: 題型:

【題目】下列物質中屬于溶液的是(

A.豆?jié){

B.碘酒

C.牛奶

D.蒸餾水

查看答案和解析>>

科目:初中地理 來源: 題型:

【題目】C

People eat different things in different parts of the world.

In some countries, people eat rice every day. Sometimes they eat it two or three times a day for breakfast, lunch and supper. They eat rice with meat, fish and vegetables. Some people do not eat some kinds of meat. Muslims(穆斯林), for example, do not eat pork. Japanese eat lots of fish. They are near the sea. So it is easy for them to get fish.

In Western countries such as Britain, Australia and the USA, the most important food is bread and potatoes. People there can cook potatoes in many different ways.

Some people eat only fruit and vegetables. They do not eat meat or fish or anything from animals. They eat only food from plants(植物). Some people say that food from plants is better than meat. These people are called vegetarians.

【1】 What does the underlined word vegetarians mean in Chinese?

A. 肉食主義者 B. 生食主義者

C. 果食主義者 D. 素食主義者

【2】__________ do not eat pork.

A. Chinese B. Japanese

C. Muslims D. Americans

【3】 Why do Japanese eat lots of fish?

A. Because they like fish better than the other food.

B. Because it is easy for them to get fish.

C. Because fish can give them lots of calories.

D. Because they think eating fish can make them clever.

【4】 What is the most important food in Australia?

A. Fish. B. Bread. C. Vegetables. D. Fruit.

【5】Which one of the following sentences is true?

A. People in different countries eat different food.

B. If you only eat food from animals, you are a vegetarian.

C. Food from animals is better than food from plants.

D. People in some Western countries can only cook potatoes in one way.

查看答案和解析>>

科目:初中地理 來源: 題型:

【題目】名稱中有字的物質不一定都是溶液,下列有字的物質屬于溶液的是

A.硬水 B.油水 C.泥水 D.蒸餾水

查看答案和解析>>

科目:初中地理 來源: 題型:

【題目】A man once bought a parrot. The man let him fly freely all over the house instead of putting him in the cage. The parrot was pleased with that and flew from room to room,screaming with happiness.

"Who on earth are you?" said a voice from below. "Don't make that terrible noise any more."

The parrot saw a cat staring(盯著)up at him from the floor.

"I'm a parrot. 1've just arrived and I'm to make as much noise as I can,”he said.

"Well,I've lived here all my life, " answered the cat. "I was born in this house and I learnt from my mother that it is the best to keep quiet here."

"Keep quiet then," said the parrot happily. "I don't know what you do around here, but I know my job. My master bought me for my voice and I'm going to make sure he hears it."

1The underlined word "master" means " " in Chinese.

A. 爸爸 B. 主人 C. 哥哥 D. 親戚

2There are kinds of animals in the passage.

A. four B. three C. two D. one

3The cat asked the parrot to

A. listen carefully B. keep noisy

C. keep quiet D. do his job

4From the passage we know .

A. everyone should do his job

B. the cat sleeps every day

C. the parrot is not free

D. the cat has just arrived at the house

查看答案和解析>>

同步練習冊答案