一粗细均匀的J型玻璃管竖直放置,短臂端封闭,长臂端(足够长)开口向上,短臂内封有

题型:计算题

问题:

一粗细均匀的J型玻璃管竖直放置,短臂端封闭,长臂端(足够长)开口向上,短臂内封有一定质量的理想气体。初始状态时管内各段长度如图(a)所标,密闭气体的温度为27℃。大气压强为75cmHg,求:

(1)若沿长臂的管壁缓慢加入5cm的水银柱并与下方的水银合为一体,为使密闭气体保持原来的长度,应使气体的温度变为多少?

(2)在第(1)小题的情况下,再使玻璃管沿绕过O点的水平轴在竖直平面内逆时针转过180°,稳定后密闭气体的长度变为多大?

(3)在图(b)的p-T坐标系中画出以上两个过程中密闭气体的状态变化过程。

考点:查理定律(等容定律)玻意耳定律(等温定律)
题型:计算题

Today, I want to write something about my mother. When I had something difficult to do, I often asked my mother for   1   . But she always said, “Do it yourself, dear.” I was not happy about this at all. I thought she was the    2    mother in the world.
For example, one day, I decided to   3  some friends to my home. My bedroom was not in order(整齐的). Books were    4 , and I didn’t make the bed. I asked my mother to help me clean it,  5  she still said, “Do it yourself, girl.”
Because of my “lazy mother”, I had to   6  my clothes and clean my room. I have to help my parents do   7 .  I even had to go to the dentist by myself. It was really hard for me to do everything well, but I have    8  a lot. 
As time goes by, I understand my mother. She made me clever and diligent (勤奋的) .     9 a great mother!  A   10  mother is worth(等值于)one hundred teachers! Don’t you think so?
小题1:
A.moneyB.helpC.timeD.life
小题2:
A.tallestB.most foolishC.laziestD.most beautiful
小题3:
A.leaveB.inviteC.visitD.drive
小题4:
A.anywhereB.somewhere C.nowhereD.everywhere
小题5:
A.orB.whenC.butD.so
小题6:
A.washB.moveC.buyD.hide
小题7:.
A.jobB.homeworkC.meetingD.housework
小题8:
A.shownB.criedC.learnedD.drove
小题9:
A.WhichB.WhatC.WhoD.How
小题10:
A.youngB.goodC.happyD.lazy
题型:计算题

<<论语》曰:“独学而无友,则孤陋而寡闻。”从哲学上看,这说明    (    )

①外因是事物变化发展的必要条件   ②人是社会动物,社会性是人的本质属性

③个人活动要受到社会条件的制约   ④亲身实践是人们获得知识的根本途径

A.①②③

B.③④

C.①③④

D.①②

题型:计算题

(本题7分)甲方与乙方签订房屋租赁合同,甲方将自己所有的一处800平米的二层楼租给乙方经营饭店。合同中还约定,“乙方在租赁过程中如决定购买该房,按每平米5000元价格购买,具体事项另行协商。”饭店开张后生意兴隆,乙方决定买下该房长期经营。但因房价上涨,甲方不同意出卖。后甲方以每平米6000元的价格与方林公司签订了房屋买卖合同。乙方为阻止甲方与方林公司成交,向该房屋所在地法院提起诉讼,要求认定租赁合同中的买卖条款有效并判决甲方履行协助办理房屋过户手续的义务。问:

在起诉前,乙方为阻止甲方与方林公司成交,可申请法院采取什么措施?

题型:计算题

社区文化的构成要素是什么?

题型:计算题

经领导人授意,统计人员可以篡改统计资料,随文附上资料更改说明。 ( )

更多题库