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林木采伐作业设计书是林业经营单位的法定性技术文件。
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林木采伐作业设计须具有林业调查规划设计资质的单位承担，承担设计的技术负责人必须由林业工程师以上职称的人员担任。
采伐作业设计文本主要分为简易申报卡和林木采伐作业设计书两种。
透光伐适用于郁闭度大于0.8的幼龄林，生长伐适用于郁闭度大于0.8的中龄林，抚育间伐后郁闭度不能低于0.6。
Listen to the following passage and fill in the blanks with what you hear.[音频]What is classic?In terms of literature, a classic is a work that contains vivid characters, exciting plots, 1)_____________, imaginative fantasy, witty satire, surprising twists, unique 2)___________ not found in our real lives.Classics are 3)_________ books. Sometimes they are easy to read and sometimes they’re near impossible. Sometimes they can change you, support you, inform you and 4)_______ you.Classics are the few books 5)_______________. They are seemingly always in print or always 6)___________. The bottom line is that classics are classics because they have meaning and quality. These things seem to appeal to readers.Classics such as Moby Dick are a part of our heritage and our legacy to future 7)__________. Our world is changing so fast that we need to stop and 8)________________ our own cultural heritage. Most classics are 9)____________ _______, far beyond our ability to analyze completely.As is said by a Scottish novelist, “The difficulty of literature is not to write, but to write what you mean; not to affect your reader, but to affect him precisely 10)__________.”
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