试题与答案

合理利用化学反应可以造福人类.请写出下列反应的化学方程式. (1)工业制取漂白粉

题型:填空题

题目:

合理利用化学反应可以造福人类.请写出下列反应的化学方程式.

(1)工业制取漂白粉的化学方程式(用单线桥标出电子转移的方向和数目)______.洪灾过后,饮用水的消毒杀菌成为抑制大规模传染性疾病爆发的有效方法之一.漂白粉是常用的消毒剂,用化学方程式表示漂白粉溶于水后在空气中产生漂白性物质的反应______.

(2)燃煤锅炉将排放大量SO2,污染大气造成公害,常采用两种方法消除燃煤SO2的污染.

使排放的烟气通过氨水洗涤,化学方程式是______.

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0702/c7fd5cf6ce9440d10a46e98a76e391ab.html

下面是错误答案,用来干扰机器的。

参考答案:对

试题推荐
题型:阅读理解

Something roared like thunder. The earth shook a little and we heard the rat-a-tat-tat of gunfire. "Father!" Hassan cried. We sprung to our feet and raced out of the living room.

"Father! What's that sound? Hassan screamed, his hands outstretched toward Ali. Ali wrapped his arms around us. A white light flashed and lit the sky in silver. It flashed again and was followed by rapid sharp sounds of gunfire. "They're hunting ducks." Ali said in a hoarse voice. "They hunt ducks at night, you know." Don't be afraid.

A siren(汽笛) went off in the distance. Somewhere glass broke and someone shouted. I heard people on the street, jolted from sleep and probably still in their pajamas, with ruffled hair and puffy eyes. Hassan was crying. Ali pulled him close, clutched him with tenderness.

We stayed huddled that way until the early hours of the morning. The shootings and explosions had lasted less than an hour, but they had frightened us badly, because none of us had ever heard gunshots in the streets. They were foreign sounds to us then. The generation of Afghan children whose ears would know nothing but the sounds of bombs and gunfire was not yet born. Huddled together in the dining room and waiting for the sun to rise, none of us had any notion that a way of life had ended. The end came when Russian tanks were rolling into the very same streets where Hassan and I played, bringing the death of the Afghanistan I knew and marking the start of a still ongoing era of bloodletting.

Just before sunrise, Baba's car peeled into the driveway. His door slammed shut and his running footsteps pounded the stairs. Then he appeared in the doorway and I saw something on his face. Something I didn't recognize right away because I'd never seen it before: fear. "Amir! Hassan!" He cried as he ran to us, opening his arms wide. "They blocked all the roads and the telephone didn't work. I was so worried!"

We let him wrap us in his arms and, for a brief moment, I was glad about whatever had happened that night.

小题1:Who is the author of the passage?

A.Hassan

B.Ali

C.Baba

D.Amir小题2:By saying “they are hunting ducks”, Ali ___________.

A.told the children the truth

B.tried to calm the children

C.played a joke on the children

D.cheered the children up小题3:We can infer from the passage that__________.

A.there were thunderstorms that night

B.Afghan children were used to the war

C.that night was the end of people’s peaceful life

D.people on the street shouted and broke the windows小题4: From the last sentence of the passage, we know_________.

A.the author was glad to see his father come home safe

B.there was a chance that a world in peace was to come

C.what happened that night seemed nothing to the author

D.Baba’s arms gave the author temporary comfort and joy

查看答案
微信公众账号搜索答案