[题目]防毒面具滤毒罐内盛放的物质是( ).A．石墨 B．活性炭C．焦炭 D．生石灰题目和参考答案——青夏教育精英家教网—

题目内容

【题目】防毒面具滤毒罐内盛放的物质是( )。

A．石墨 B．活性炭

C．焦炭 D．生石灰

【答案】B

【解析】

试题分析：防毒面具滤毒罐内盛放的物质是必须是吸附性很强的活性炭。

练习册系列答案

相关题目

【题目】 This is the bike __________ my mother bought yesterday.

A. that B. who C. whom D. what

【题目】用符合题目要求的序号填空：

①氧气；②空气；③二氧化碳；④二氧化硫；⑤五氧化二磷；⑥四氧化三铁。

（1）通常状况下无色、无味的气体是________；

（2）有刺激性气味并且污染空气的气体是________；

（3）属于黑色固体的是________；

（4）支持燃烧的气体是________；

（5）属于白色固体的是________。

【题目】 —I’m very __________ today because I have too much homework to do.

—Really? That sounds boring.

A. relaxing B. busy C. free D. cool

【题目】实验测得某物质中只含有碳元素，则这种物质( )。

A．一定是金刚石或石墨中的一种

B．一定是木炭或活性炭中的一种

C．一定是碳元素的一种单质

D．可能是一种碳单质，也可能是几种碳单质组成的混合物

【题目】下列关于溶液的说法正确的是( )。

A．溶液一定是无色、透明的混合物

B．溶液加水稀释前后，溶质的质量一定不变

C．溶剂量不变时，加入的溶质越多，溶液质量一定越大

D．物质溶于水形成溶液时，溶液温度一定不变

【题目】写出下列溶液中溶质的化学式。

溶液	溶质
可用制取氢气的稀硫酸溶液
用于医疗消毒的过氧化氢溶液(俗称双氧水)
医疗消毒用的高锰酸钾溶液(俗称紫药水)
医疗用的0.9%的氯化钠注射液(生理盐水)
澄清的石灰水

【题目】生活中常见的下列物质，不属于溶液的是( )。

A．糖水 B．蒸馏水

C．碘酒 D．汽水

【题目】B

Winter Sale!

Winter is coming. So we are having a big and endofautumn sale. Look at the prices!

A blouse：$5

A coat：$20

A silk(丝绸) skirt：$28

A pair of trainers：$30

A pair of jeans：$30

Will you come to Reborn Fashion Shop on the 2nd floor of New Century Shopping Mall between Friday and Sunday?

Cash Back!

Spend twenty dollars in our shop, and we will give you five dollars back. Spend 40 dollars, and you will get 10 dollars back.

Remember：only at weekends

You are welcome to Happy Times Doll Shop on the first floor of New Century Shopping Mall.

Closing Down Sale!

Come to our shop next Monday. There is a discount(打折) on every kind of chocolate. And we will give you a big box of sweets for free(免费的) if you spend more than 20 dollars in our shop. So come to Sweetheart Chocolate Shop on the first floor of New Century Shopping Mall.

【1】 How many shops are there in this advertisement(广告)?

A. Six. B. Four. C. Three. D. Two.

【2】 What is the price of a silk skirt in Reborn Fashion Shop?

A. $ 5. B. $ 20. C. $ 28. D. $ 30.

【3】If(如果) you spend 20 dollars in Happy Times Doll Shop, how much will you get back?

A. 5 dollars. B. 15 dollars.

C. 20 dollars. D. 40 dollars.

【4】If you want to buy clothes at a lower price, where should you go?

A. Happy Times Doll Shop.

B. Reborn Fashion Shop.

C. Sweetheart Chocolate Shop.

D. The first floor of New Century Shopping Mall.

【5】What does the underlined word mean in Chinese?

A. 商品 B. 发票 C. 赠品 D. 现金

试题分类