3.高温结构陶瓷
(1)高温结构陶瓷的优点:能经受高温、不怕氧化、耐酸碱腐蚀、硬度大、耐磨损、密度小等。
(2)高温结构陶瓷的种类:
①氧化铝陶瓷:又称人造刚玉,具有熔点很高、硬度高的优点。可用于作坩埚、高温炉管、球磨机、高压钠灯的灯管等。
②氮化硅陶瓷:具有硬度极高、耐磨损、抗腐蚀和抗氧化能力等优点。可用于制造轴承、汽轮机叶片、机械密封环、永久性模具、发动机部件等。
③碳化硼陶瓷:具有熔点高、硬度大的优点。广泛应用于工农业生产、原子能工业、宇航工业等。
2.新型无机非金属材料的特性
(1)耐高温、强度高
(2)具有电学特性
(3)具有光学特性
(4)具有生物功能
1.无机非金属材料的分类
(1)传统无机非金属材料:水泥、玻璃、陶瓷等硅酸盐材料。
(2)新型无机非金属材料:半导体材料、超硬耐高温材料、发光材料等。
4.陶瓷
(1)制造陶瓷的主要原料:粘土。
(2)制造陶瓷的一般过程:混合、成型、干燥、烧结、冷却、陶器
(3)陶瓷的种类(根据原料、烧制温度划分):土器、陶器、瓷器、炻器等。硅酸盐的组成可以用氧化物形式来表示例 高岭石:A12(Si205)(OH)4可表示为:A1203·2Si02·2H20
3.比较水泥和玻璃的生产方法(见下表)硅酸盐产品
硅酸盐产品 |
水泥 |
玻璃 |
主要设备 |
水泥回转窑 |
玻璃窑 |
原料 |
石灰石和粘土 |
纯碱、石灰石、石英(过量) |
反应原理 |
复杂的物理-化学变化 |
Na2CO3+SiO2 ?Na2SiO3+CO2
↑ CaCO3+SiO2 ?CaSiO3+CO2↑ |
主要成份 |
3CaO·SiO2、2 CaO·SiO2、3CaO·Al2O3 |
Na2SiO3、CaSiO3、SiO2 |
反应条件 |
高温 |
高温 |
2.玻璃
玻璃有普通玻璃、石英玻璃、光学玻璃等等。玻璃没有固定的熔、沸点。
1.水泥
普通水泥的主要成分是硅酸三钙(3CaO·Si02)、硅酸二钙(2CaO·Si02)和铝酸三钙(3CaO·A1203)等。
短文填词(共10小题;每小题1分,满分10分)
There are
differences between Chinese and Western restaurant. |
|
Many
customers in Chinese restaurant (喊叫) at waiters
as if they, |
100.____ |
the
customers, were God. Also, they make fun of waiters and look ________ |
101.____ |
upon them. H
, in Western restaurants, it is quite different |
102.____ |
People eat
quietly and they treat waiters respect. |
103.____ |
At the same
time, they smile _______ them and behave gracefully. |
104.____ |
Usually, the
waiters in Chesnee restaurant work h_______ all day, and then |
105.____ |
continue to
work after the restaurant ___
__(关门). |
106.____ |
They are
exhausted, but no one ___________(表扬) them. |
107.____ |
In Western
restaurants, on the _______ hand, the waiters often |
108.____ |
get good pay
and received ___________(小费) and compliments. |
109.____ |
第二节、书面表达(共20分):
进入高二以后,同学们的学习任务加重,对于参加课外活动,同学们有着两种不同的看法。请以After-school activities 为题,用英语写一篇120词左右的短文。要点如下:
一些同学积极参加课外活动 |
另外一些同学不愿参加课外活动 |
你的观点和理由 |
学到实践知识 放松 |
学业紧 |
…… |
注意:开头已经给出,但不计入总词数。
After-school activities
As for after-school activities, students hold different views.
福州高级中学2009-2010学年第二学期期中考试
第三节、根据所提供的语境,从所给的词组选择适当的词组填空,并注意形式变化(共10小题;每小题1分,满分10分)
fit in, sort out, stick out, desire for, hear from, test out, in particular, reach for, cut out, settle in
The earth is a water ball with a few pieces of land of the water.
If you want to apply for the job, you might as well the ad in the paper.
the new technology is going to be by the factory.
I have to my feelings before I talk with her about the matter.
They came to a new city and __________ there.
Mr. Read promised to buy his son the computer he on his 14th birthday.
Not __________ her for a long time, he wrote a letter again.
I love sports, bowling and climbing _____________.
The boy caught sight of a science fiction on the shelf and ___________________ it.
Your holiday arrangements must ______________________ with mine.
第二卷(共一部分,满分30分)
第二节、根据所给的中文提示完成句子(共7小题16空;每空1分,满分16分)
他与人相处的方式和他的性格有关。
The way in which he gets along with people his character.
这个产品瞄准女性市场。
This product is the female market.
我只是在这里帮忙,直到新的老师来。
I am just until the new teacher arrives.
总的来说,我们还有很长的路要走。
, we have a long way to go.
如果你准备充分,你就一定能通过测试。
You are pass the test if you are well prepared.
记住这种药片一天服用两次,一次5片。
Remember to take the pills twice a day and five at .
我们避开了一群等在门外的记者。
We avoided journalists waiting outside.
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com