中文翻译英文。高手进
1.我们学校在11月21日举行英语演讲比赛。
Our
school
will
held
an
English
speech
competition
on
the
21st
November
2.---你喜欢我们学校的艺术节吗？
---是，我喜欢。
---Do
you
like
the
arts
festival
of
our
school?
---
Yes,
I
like
it.
3.你们学校什么时候举行篮球比赛？
When
will
your
school
held
the
basketbakk
competition?
4.每年4月他们学校都举行郊游。
Their
school
will
arrange
a
picnic
in
April
every
year.
高手请进 翻译成英文
With the continuous development of oil refining industry, the Fcc catalytic cracking of petroleum deep processing becomes important
Section. In the refining industry plays a decisive role. The FCC process is appropriate, the purpose of heavy oil products
Gasoline, diesel oil and gas is. Due to the high conversion, product quality is good, nearly half a century, the FCC
Art technology and production scale have very big development. In order to meet the requirements of environmental protection and increasingly strict market of propylene
Hydrocarbon (especially propylene), the growing demand in catalytic cracking technology and further development and improvement. push
The refining industry has become a cracking of core technologies and petrochemical enterprise economic benefits of main pillar.
As the core of the refinery process device, catalytic cracking faces more challenges. Constantly strictly
The environmental protection request, mainly is the upgrade of gasoline specification requirements and sulfur content in olefins and flue gas emissions limits
: Demand for products, such as the ratio of diesel market changes and the increasing number of demand, the so-called wood
Oil tendency. All of the existing FCC catalytic cracking unit and the further development of the formation of the big rush
Strike. In addition to using new effectively lower the FCC gasoline and diesel outside the sulfur. Consider each
The cost of technical problems.
The FCC industry in China since the 1960's, device number and production capacity constantly high,
According to not complete count, existing catalytic cracking unit nearly 100 sets of production, processing capacity of more than 5,000 million t/a,
After the United States, ranking second in the world. In recent years, residue catalytic cracking had great progress, not only widen the sources of the raw materials, and FCC gasoline and diesel increased production in China, accelerate the process of heavy oil yields