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"Reaction of Acid and Base" Common Acids, Bases and Salts PPT Courseware 3
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"Reaction of Acid and Base" Common Acids, Bases and Salts PPT Courseware 2
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"Acidity and Alkalinity of Solutions" Common Acids, Alkalis, and Salts PPT Courseware 4
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"Acidity and Alkalinity of Solutions" Common Acids, Alkalis, and Salts PPT Courseware 3
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"Common Acids and Bases" Common Acids, Bases and Salts PPT Courseware 3
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"Common Acids and Bases" Common Acids, Bases and Salts PPT Courseware 5
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"Multiples and Factors" Multiples and Factors PPT courseware download
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"Density and Social Life" Quality and Density PPT Download
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"China's Opportunities and Challenges" Developing Together with the World PPT
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"Melting and Solidification" Temperature and Physical State Changes PPT Courseware
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"Electric Energy and Electric Power" Electric Energy and Electric Power PPT Courseware 3
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"Combustion and Fire Extinguishing" Combustion and Fuel PPT (Lesson 2)
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"Mistakes and Frustrations" PPT on the Construction and Reform of New China
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"Melting and Solidification" Temperature and Physical State Changes PPT Courseware
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"Multiples and Factors" multiples and factors PPT teaching courseware
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"Supplementary Angle and Supplementary Angle" Parallel Lines and Intersecting Lines PPT Courseware
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"Chemistry and Environment" Chemistry and Social Life PPT Courseware
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"Chemical Elements and Human Health" Chemistry and Life PPT
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"Vaporization and Liquefaction" Temperature and Physical State Changes PPT Courseware
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"The division and sum of numbers from 2 to 5" PPT courseware 2 on division and sum
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