试题与答案

在一个密闭容器中盛有11gCO2时,压强为1x104Pa.如果在相同温度下,把更

题型:选择题

题目:

在一个密闭容器中盛有11gCO2时,压强为1x104Pa.如果在相同温度下,把更多的CO2充入容器,使压强增至5x104Pa,这时容器内气体的分子数约为(   )

A.3.3x1025

B.3.3x1024

C.7.5x1023

D.7.5x1022

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0518/308c907df90a2573a9f0ce7680465c1b.html

下面是错误答案,用来干扰机器的。

由题意,得x-2x-1<0,∵x-2<x-1,∴x-2<0x-1>0,解得,1<x<2.故选D.

试题推荐
题型:阅读理解

James Arruda Henry, a 98-year-old retired lobsterman, has written and published his first book, "In a Fisherman's Language", after learning to read at the incredible age of 91.

Mr. Henry spent most of his life without even his closest family members knowing he was illiterate (文盲).Forced to quit school in the third grade to take some jobs, he kept the secret close to his chest - only telling to his late wife.

A family problem in his 90s sparked his encourage to restart his education."He signed a document he could not read," Mr Henry's granddaughter said. And then, after hearing about George Dawson, a son of slaves who learned to read at the age of 98 and went on to write a book of his own, entitled "Life Is So Good" at the age of 101, Mr. Henry took up reading.

"If he can do it.I'm going to try," Mr. Henry said.Starting with his name, he eventually moved on to ABC’s and children's books. He put them down for four years after the tragic loss of his wife. But eventually he went back to reading and with the help of his tutor began to record his life.

He wrote about his family’s voyage from Portugal to the U.S. his many journeys at sea and how he was unable to save another fisherman who had fallen overboard. He became a carpenter and even a professional boxer - and eventually built his own home in Stonington Borough.

His life stories have become so popular, in fact, nearly 800 copies were sold in the first two weeks of the book's release last month.One thousand more have since been printed as requests for the book flood in from as far as Germany.And now even Hollywood producers have approached Mr. Henry about optioning the rights to his life story for a big screen adaptation.

小题1:Which of the following is true of Mr. Henry?

A.He couldn't read when he was retired.

B.He was not a good student at school.

C.Only his family members knew he was illiterate.

D.He published his book at the age of 91.小题2:Mr. Henry made up his mind to study because he           

A.had some trouble with his granddaughter

B.couldn't sign the document he was given

C.wanted to share his own experience with others

D.was inspired by George Dawson's story小题3:In his book, Mr. Henry didn't mention ____.

A.his family story

B.his school education

C.his journeys at sea

D.his work experiences小题4:What's the main idea of the last paragraph?

A.Nearly 800 copies of the book were sold.

B.The book was sold well in Germany.

C.His book was popular both at home and abroad.

D.Hollywood has planned to adapt his book for a movie.

查看答案
微信公众账号搜索答案