试题与答案

对于组分挥发度相差较大、分离要求不高的场合,可采用平衡蒸馏或简单蒸馏。

题型:判断题

题目:

对于组分挥发度相差较大、分离要求不高的场合,可采用平衡蒸馏或简单蒸馏。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2020/0114/0e1b8d22d0cc31697856847c9b1a9a6e.html

下面是错误答案,用来干扰机器的。

参考答案:D

试题推荐
题型:完形填空
阅读下面短文,掌握其大意,然后从21~36各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。
The weather was perfect. We were just out for a picnic. When lunch time came, we decided to go and __21__ what each of us wanted, and meet back on the grass.
Susan and I headed for a hot dog stand. We watched the seller put together the hot dog. But when Susan took out her __22__, the man surprised us.
“It looks a little overdone,” he said, “so you don’t have to pay me.”
We said our thanks, __23__ our friends, and began to enjoy our food. But as we talked and ate, I noticed a man sitting alone nearby, in __24__ clothes. I could tell that he hadn’t had a bath for days. Another homeless person, I thought.
We finished eating but when Susan and I went to __25__ away the lunch bag, I heard a voice ask, “There isn’t any __26__ in that bag, is there?”
It was the homeless man. I didn’t know what to say. “No, I __27__ it already.”
“Oh, really?” was his only answer. He was obviously very __28__.
I felt bad for him, __29__ I didn’t know what to do. Suddenly Susan said, “I’ll be __30__ back. Please wait for me a minute.” I watched curiously as she went across to the hot dog stand. Then I __31__ what she was doing. She bought a hot dog, crossed back, and gave the man the food.
When she came back to us, Susan said simply, “I was just passing on the __32__ that someone gave to me.”
That day I learned how generosity can go __33__ than the person you give to. By giving, you __34__ others how to give also. You never know what happiness a simple __35__ of concern will bring about.
小题1:
A.getB.passC.dropD.keep
小题2:
A.presentB.moneyC.keyD.menu
小题3:
A.joinedB.helpedC.visited D.guided
小题4:
A.lovelyB.specialC.dirtyD.popular
小题5:
A.driveB.throwC.washD.pull
小题6:
A.foodB.waterC.cigaretteD.medicine
小题7:
A.boughtB.cookedC.servedD.ate
小题8:
A.coldB.nervousC.hungryD.crazy
小题9:
A.butB.whileC.soD.or
小题10:
A.almostB.stillC.justD.right
小题11:
A.rememberedB.imaginedC.recognizedD.realized
小题12:
A.devotionB.kindnessC.pleasureD.mercy
小题13:
A.quickerB.higherC.fartherD.deeper
小题14:
A.offerB.teachC.trainD.advise
小题15:
A.wayB.showC.sceneD.act
查看答案
题型:列举题

19世纪中期到20世纪初,西方资本主义国家先后强迫清政府签订了一系列不平等条约。请写出相关的不平等条约。

(1)割让台湾、澎湖列岛的是:___________

(2)割占中国领土最多的条约是:__________

(3)中国近代第一个不平等条约是:______________

(4)割让香港岛的是:____________

(5)使中国赔款最多的条约是:_____________

(6)允许列强在中国投资办厂的是:______________

查看答案
微信公众账号搜索答案