将晶体X加热分解,可得A、B、D、E、F和水六种产物,其中A、B、D都是中学化学

题型:填空题

问题:

将晶体X加热分解,可得A、B、D、E、F和水六种产物,其中A、B、D都是中学化学中常见的氧化物,气体E是单质F所含元素的氢化物。

(1)A能溶于强酸、强碱,写出A与强碱溶液反应的离子方程式_______________。

(2)B、D都是酸性氧化物且组成元素相同,D溶于水得强酸,则B、D分子中除氧元素外所含另一种元素在周期表中的位置是_______________。

(3)E能使湿润的红色石蕊试纸变蓝,实验室制取E气体的化学方程式为________________,制得的气体可用如图所示装置收集,则气体应从_______(填“A”或“B”)通入。

(4)由各分解产物的物质的量之比推测X的组成类似于明矾,则其化学式为___________,若向X的浓溶液中滴加浓NaOH溶液至过量,现象依次为_______________     、___________      _、

_____________          。

(5)取一定量的X晶体分解,若生成F 1 mol,则必同时生成______物质_____   mol。

考点:元素的性质生活中的元素(常量元素、微量元素)
题型:填空题

某学者准备给中学生作有关欧美近代现实主义文学的报告,为此他去网书馆查阅了部分文学作品,其中与报告内容相关度较高的是[ ]

A、

B、

C、

D、

题型:填空题

OSI定义的网络管理包括配置管理、故障管理、性能管理、计费管理和安全管理五大功能,下列操作中属于配置管理的是 ( ) 。

A.网络管理者通过GetRequest获得当前处理的消息数量

B.网络管理者通过GetRequest获得计费参数

C.网络管理者通过SetRquest更改系统的LOG级别

D.网管代理通过Trap发送故障消息

题型:填空题
Have you ever considered all the English expressions that include words about clothes? Let’s see if I can name a few proverbs “off the cuff” since I haven’t prepared for it.
English expressions with “pants”
People wear pants to cover the lower part of their bodies. We sometimes say that people who are restless or nervous have “ants in their pants.” They might also “fly by the seat of their pants” -- they use their natural sense to do something instead of their learned knowledge. Sometimes, people may “get caught with their pants down” -- they are found doing something they should not be doing. And, in every family, one person takes control. Sometimes a wife tells her husband what to do. Then we say “she wears the pants in the family.”
When people what to say something about money
Pants usually have pockets to hold things. Money that is likely to be spent quickly can “burn a hole in your pocket.” Sometimes you need a belt to hold up your pants. If you have less money than usual, you may have to “tighten your belt” -- you may have to live on less money and spend your money carefully. But once you have succeeded in budgeting your money, you will have that skill “under your belt.”
I always praise people who can save their money and not spend too much. I really “take my hat off to them.” Yet, when it comes to my own money, I spend it “at the drop of a hat” -- immediately, without waiting. And sadly, you cannot “pull money out of a hat” -- you cannot get money by inventing or imagining it.
English expressions with “shoes”
Boots are a heavy or strong kind of shoes. People who are “too big for their boots” think they are more important than they really are. I dislike such people. I really do. You can bet your boots on that!
Yet, truly important people are hard to replace. Rarely can you “fill their shoes” -- or replace them with someone equally effective.
English expressions with “shirt”
My father is an important person. He runs a big company. He wears a suit and tie and a shirt with sleeves that cover his arms. Some people who do not know him well think he is too firm and severe. They think he is a real “stuffed shirt.” But I know that my father “wears his heart on his sleeve” -- he shows his feelings openly. And, he knows how to “keep his shirt on” -- he stays calm and never gets angry or too excited.    
 
小题1:What is this passage mainly about?
A.How to say English correctly and properly.
B.Why English expressions include words about clothes.
C.Which words can be used to describe my father.
D.What people mean when they use some proverbs.
小题2:Which of the following proverbs are not related to money?
A.tighten one’s beltB.burn a hole in one’s pocket
C.get caught with their pants downD.take one’s hat off to them
小题3:Tim often considers himself the most important person in the world , which is far from the truth .We may say ____.
A.he is “too big for their boots”.
B.he “bet his boots on that ”.
C.he “ fill their shoes”.
D.he “wears his heart on his sleeve ”.
小题4:If you want to praise somebody for his calmness when facing danger , you may say ___.
A.“You really fill your shoes”
B.“Awesome ! You wear your heart on your sleeve!”
C.“Amazing !How can you keep your shirt on at that time!”
D.“Cool! You are truly a stuffed shirt”.
题型:填空题

颈静脉怒张肝大,下肢水肿可见于()

A.限制型心肌病

B.左心衰竭

C.心包积液

D.缩窄性心包炎

E.右心衰竭

题型:填空题

现生产泡沫按照加工方式分类为()

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