中国环境科学出版社：《环境监测管理》参考书籍PDF电子书（第二版，2/4）

中国环境科学出版社：《环境监测管理》参考书籍PDF电子书（第二版，1/4）

1.姚穆.纺织材料学.第二版.纺织工业出版社,1990 2.赵书经.纺织材料实验教程.纺织工业出版社,1989 3.李栋高、蒋蕙钧.丝绸材料学.中国纺织出版社,1994

1、考虑图1所示关系数据库。对于下述查询中的每一个,给出一个关系代数表达式

1 Raw material selection: fruit and vegetables 1.2 Criteria for selection 1.3 Specifications 1.4 New trends in raw material production 1.5 New trends in plant breeding 1.6 Conclusion

Objectives Focus Warming up 2.1 Communicating in writing 2.2 Names and addresses 2.3 Layout and style 2.4 Thinking about your reader 2.5 Sending messages Sum-up Assignment

Objectives Focus Warm up 1.1 First Impressions 1.3 What do you enjoy about your work 1.5 Developing relationships Sum-up Assignment

参考教材：《会计学基础》，朱继民、周建龙，安徽大学出版社，2019 年第二版

Australia 461-2 automated enzyme immunoassays 205-6 agronomic characteristics 20-1 automated microbiological methods air handling system

Published by woodhead Publishing Limited, Abington Hall, Abington Cambridge cb1 6AH. england www.woodhead-publishing.com Published in No d South America by CRC Press LLC, 2000 Corporate Blvd, Nw Boca raton Fl USA First edition 1992. Ellis Horwood Ltd