【正文】 , ring die roll pressure type forming machine production rate highest, energy low, products cost low, while technology content also high, for Yu scale production promotion. Since in the 1980 of the 20th century, China39。s biotechnology research and development have made great progress, national research and production equipment of enterprises or research institutes has dozens of homes. China39。s industrialization of biomass briquette fuel prototype is formed, however, to be mature and realize industrialization, you first need to overe some constraints, some technical obstacles. Includes the main working parts of the short working life, poor ability to coordinate equipment systems, running unstable, and so on. Also, due to the lack of effective industrial practices, solid biomass industry is still in its infancy in China. Biomass fuel shaping technology, stable performance and low power consumption of the device is the core of industrialization of biomass fuel, good industry and the Government39。s support and the necessary funding is a prerequisite for industrialization of biomass briquette fuel. To press biomass briquette processing cost, you will need to yield power, vulnerable performance and low cost, labor cost, control three aspects. Meanwhile, burning of biomass is also on the industry39。s core technology, generally, because of biomass fuels to replace coal, can be used, in fact, due to biomass畢 業(yè) 設(shè) 計(jì) （ 論 文 ） 任 務(wù) 書 題目： 　 　　　企業(yè)銷售合同發(fā)票管理系統(tǒng) 姓名李長雄 系 計(jì)算機(jī)與通信學(xué)院 專業(yè) 計(jì)算機(jī)科學(xué)與技術(shù) 班級(jí) 0701 學(xué)號(hào) 202203010116 指導(dǎo)老師 周鐵山 職稱 一、 基本任務(wù)及要求：1 設(shè)計(jì)任務(wù)特點(diǎn)及分析企業(yè)銷售合同發(fā)票管理系統(tǒng)是各類企業(yè)、公司、以及個(gè)體商業(yè)戶的數(shù)據(jù)庫軟件，它可用計(jì)算機(jī)來代替人的管理。它包括合同管理，人員管理，公司管理，合同類別管理，銷售發(fā)票管理等模塊。2 主要任務(wù)[1] 狀態(tài)圖：可在屏幕上實(shí)時(shí)動(dòng)態(tài)顯示銷售合同的各種使用情況，使管理人員及時(shí)掌握企業(yè)運(yùn)行狀況的情況，使管理者制定更好的符合企業(yè)運(yùn)行的生產(chǎn)銷售計(jì)劃，使企業(yè)良性運(yùn)行。 [2] 用戶登錄模塊：通過用戶名和密碼進(jìn)行登錄、分為合同錄入人員，管理人員和審核人員。 [3] 銷售合同管理模塊：主要包括合同的新增、刪除、修改。 [4] 銷售合同查詢模塊：主要包括按合同號(hào)、發(fā)展商、總金額范圍 、是否簽約等方式查詢。 [5] 合同類別管理模塊：包括合同的新增、刪除、修改，并能打印出明細(xì)表。 [6]人員管理模塊：包括操作人員的設(shè)定，操作人員的更換，收費(fèi)價(jià)格設(shè)定等功能。 [7]企業(yè)管理模塊：主要是指企業(yè)的名稱、電話、網(wǎng)址、地址、郵政編碼等。 [8]發(fā)票管理模塊：包括銷售發(fā)票的添加、查詢、修改，以及發(fā)票的相關(guān)屬性管理。 [9]打印信息模塊：包括銷售合同與發(fā)票信息數(shù)據(jù)的顯示打印。 二、 進(jìn)度安排及完成時(shí)間： 第七~八周 課題講解； 任務(wù)布置； 調(diào)查被開發(fā)（設(shè)計(jì)）的軟件的應(yīng)用環(huán)境和用戶需求； 資料收集整理； 企業(yè)銷售合同發(fā)票管理系統(tǒng)Added. Finally, foreign investment risk, there are also opportunities. Financial crisis caused the stock and corporate bond prices plummeted, early Chinese banks 39。 foreign exchange assets in the foreign exchange reserves investment and losses, but at present the international prices of many financial assets in a low, to promote foreign mergers and acquisitions in China and promoting enterprise going out diversified cooperation, actively explore overseas resources and markets and opportunities. Meanwhile, in response to the adverse impact of world economic crisis on China, the State Council announced 10 measures to expand domestic demand and promote growth over the next two years the implementation of these measures will take about 4 trillion yuan central budget support. The 4 trillion yuan investment has an inkling, transportation, forestry, water conservancy, people39。s livelihood, environmental protection and other areas will be skewed. Increased investment will play a significant role in promoting China39。s economic growth, at the same time, there should be other progrowth measures rolled out. A series of positive measures by the State and function of 4 trillion the Central Treasury, our economy will be sustained, stable and rapid development gradually. Section II market analysis of technical feasibility of biomass fuel shaping technology and equipment is the core of industrialization of biomass briquette fuel. Biomass briquetting technology refers to a certain temperature and under pressure, will be scattered and various shapes of biomass raw materials into high density, with a variety of fuels technology. Biomass briquetting equipment including screwextrusion molding machines, mechanical piston stamping forming machine, ring dieroll and hydraulic piston stamping molding machines. Mechanical piston forming and hydraulic piston forming machine total up production efficiency low energy high, former of productivity low, actual productivity in 100200 kg, main work parts life low not for industrialization production。 which main work parts life long, but highest production capacity lower energy high。 from technology index view, ring die roll pressure type forming machine production rate highest, energy low, products cost low, while technology content also high, for Yu scale production promotion. Since in the 1980 of the 20th century, China39。s biotechnology research and development have made great progress, national research and production equipment of enterprises or research institutes has dozens of homes. China39。s industrialization of biomass briquette fuel prototype is formed, however, to be mature and realize industrialization, you first need to overe some constraints, some technical obstacles. Includes the main working parts of the short working life, poor ability to coordinate equipment systems, running unstable, and so on. Also, due to the lack of effective industrial practices, solid biomass industry is still in its infancy in China. Biomass fuel shaping technology, stable performance and low power consumption of the device is the core of industrialization of biomass fuel, good industry and the Government39。s support and the necessary funding is a prerequisite for industrialization of biomass briquette fuel. To pre