Operations used for the treatment of wastewater in which change is brought about by means of or through the application of physical forces are known as physical unit operations. Because physical unit operations were derived originally from observations of the physical world, they were the first treatment methods to be used. Today, physical unit operations, as shown on Fig. 5-1, are a major part of most wastewater

7-1 Introduction to the Activated-Sludge Process Historical Development Experiments conducted at the Lawrence Experiment Station during 1912 and 1913 by Clark and Gage With air input into wastewater, growths of organisms could be cultivated in bottles and in tanks partially filled with roofing slate spaced about 25 mm (1 in) apart and would greatly increase the degree of purification

Date: Sept.16-20 Class: Classes 1, 2 & 3, Grade 2002 Subject: English Pronunciation for Communication Purpose: The students will learn some basic concepts in English pronunciation. We are going to learn something about syllables, stress and rhythm in English. At the same time, they will learn to say greetings and farewell with appropriate pronunciation and intonation in English

I. Pronunciation (1’x 10) Directions: Choose the word whose pronunciation of the underlined part is the same as that of the given word. Then mark the corresponding letter on the Answer Sheet. 1. threat A. writhe B. father C. salty D. toothpaste 2. horrified A. opera B. totally C. extort D. grope 3. sniff A. slip B. collide C. lightning D. deprive

一、说明 1、课程的性质、地位和任务 本课程为英语专业高年级专业方向课，旨在使学生对英国文学形成和发展的全貌有一个 大致的了解；并通过阅读具有代表性的重点作品，理解作品的内容，学会分析作品的艺术特 色，并努力掌握正确评价文学作品的标准和方法，提高学生的文学欣赏水平及其文学批评能 力。本课程还同语言教学相结合，增强学生语言表达能力

6-磷酸葡萄糖脱氢酶 glucose-6-phosphate dehydrogenase Janbon 综合症 Janbon's syndrome PPB 浓度 parts per billion concentration pphm 浓度 parts per hundred million concentration PPH 浓度 parts per hundred concentration ppm 浓度 parts per million concentration 安全范围 safety range 安全试验法 innocuity test method

1.Objectives of this lecture; 2.Definition of a sentence; 3.Types of sentences; 4.Sentence patterns; 5.Short and long sentences; 6.Loose and periodic sentences; 7.Ways to establish links between sentences; 8.Common sentence problems

1.Dialect varieties 1) ethnic dialect 2) language and gender 3) Pidgin and Creole 4) bilingualism and diglossia 2.Register : 1) field and course 2)mode of discourse 3)tenor of discourse 3.Language and Culture 1) Definition of culture 2) The relationship between Language and Culture 3) Sapir-Whorf Hypothesis

• Approaches to language teaching • 1,An overview of language teaching • a, History • b, Different approaches • 2,The relation of linguistics to language teaching . • a, Relation • b, The definition of applied linguistics • C, language teaching method and linguistic theories

1.1 The nature of language 1.2 The properties of human language 1.3 The functions of language 1.4 The origin of language 1.5 The development of writing 1.6 The scope of linguistics