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最佳答案：July 2009 - March 2010 appointed longtime heating equipment Manufacturing Co., L
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最佳答案：1 Underdeveloped areas teenagers, family economic situation is bad, main source
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最佳答案：1. In the first months, main familiar with the next two department, technical pe
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最佳答案：During college ,I used the summer vacation and after-school internship hours at
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最佳答案：The phenomenon shown in Fig. 1 is caused by squeezing and collision during trans
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最佳答案：1. I have had further understanding of product design, including raw materials,
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最佳答案：Five, the conclusionEducation ethnography of anthropology is education "foundati
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最佳答案：This paper compares several methods of production process of barium chloride is
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最佳答案：Use modern technology production, using natural fiber disposable clean dishcloth
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最佳答案：Safety engineering studies various accidents during human productions and activi