在染料的名称中,某些英文符号表示特定的意义,如Conc表示(),H.C.表示()。

题型:填空题

问题:

在染料的名称中,某些英文符号表示特定的意义,如Conc表示(),H.C.表示()。

考点:化学工程染料染料题库
题型:填空题

下列事例中能说明“液体可以传声”的是(  )

A.我们能听到雨滴打在伞上的“嗒嗒”声

B.我们听到树枝上小鸟的“唧唧”声

C.花样游泳运动员在水下随着音乐“翩翩起舞”

D.人们在小溪边听到“哗哗”的流水声

题型:填空题

一件商品按标价打八折出售获利20%,那么按原标价出售可获利(  )

A.25%

B.50%

C.40%

D.60%

题型:填空题
阅读理解。
     King's College Summer School King's College Summer School is an annual training program
for high school students at all levels who want to improve their English.Courses are given by the
teachers of King's College and other colleges in New York.Trips to museums and culture centers
are also organized.This year's summer school will be from July 25 to August 15.
     More information is as follows:

Application date
●Students in New York should send their
    applications before July 18, 2009.
●Students of other cities should send their
    applications before July 16, 2009.
●Foreign students should send their
   applications before July 10, 2009.
Courses
●English Language Spoken English: 22 hours
    Reading and Writing: 10 hours
●American History: 16 hours
●American Culture: 16 hours


Steps
●A letter of self-introduction
●A letter of recommendation
﹡The letters should be written in English
    with all the necessary information.


Cost
●Daily lessons: $200
●Sports and activities: $100
●Travels: $200
●Hotel service: $400
﹡You may choose to live with your friends
    or relatives in the same city.
Please write to:
Thompson, Sanders
1026 King' s Street
New York, NY 10016, USA
E-mail: KC-Summer-School@yahoo.com
1. You can most probably read the text in _____.
[ ]
A. a newspaper
B. a travel guide
C. a textbook
D. a telephone book
2. Which of the following is true about King's College Summer School?
[ ]
A. Only top students can take part in the program.
B. King' s College Summer School is run every other year.
C. Visits to museums and culture centers are part of the program.
D. Only the teachers of King' s College give courses.
3. If you are to live with your relatives in New York, you will have to pay the school _____.
[ ]
A. $200
B. $400
C. $500
D. $900
4. What information can you get from the text?
[ ]
A. The program will last two months.
B. You can write to Thompson only in English.
C. As a Chinese student, you can send your application on July 14, 2009.
D. You can get in touch with the school by e-mail or by telephone.
题型:填空题

防止伤亡事故和职业危害,最根本的措施是提高技术装备的绝对安全水平.

题型:填空题

PLC控制系统的组成部分包括()。

A、输入部分

B、输出部分

C、控制部分

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