文章从任务型教学的定义和教学理念入手，结合我国大学英语教学基本要求，探讨了任务型教学在大学英语教学中的应用。
This paper explored the definition and teaching belief of task based teaching and how to apply this approach in College English teaching.
制冷系统和加热泵规范。安全性和环境要求：。基本要求、定义、分类和选择规范。
Refrigerating systems and heat pumps - Safety and environmental requirements - Part 1: Basic requirements. definitions. classification and selection criteria.
制冷系统和加热泵规范。安全性和环境要求：。基本要求、定义、分类和选择规范。
Refrigerating systems and heat pumps - Safety and environmental requirements - Part 1: Basic requirements. definitions. classification and selection criteria.
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