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1C_SCJ_5.1_Energy(1)_1

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1C_SCJ_5.1_Energy(1)_1

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1C_SCJ_5.1_Energy(2)_2

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1C_SCJ_5.1_Energy(2)_2

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1C_SCJ_5.1_Energy(3)_3

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1C_SCJ_5.1_Energy(3)_3

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1C_SCJ_5.1_Energy conservation_12

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1C_SCJ_5.1_Energy conservation_12

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1C_SCJ_5.1_Unit of energy_4

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1C_SCJ_5.1_Unit of energy_4

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1C_SCJ_5.3_Fossil fuel(1)_14

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1C_SCJ_5.3_Fossil fuel(1)_14

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1C_SCJ_5.3_Fossil fuel(2)_15

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1C_SCJ_5.3_Fossil fuel(2)_15

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1C_SCJ_5.1_Example of energy generation(1)_5

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1C_SCJ_5.1_Example of energy generation(1)_5

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1C_SCJ_5.1_Example of energy generation(2)_6

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1C_SCJ_5.1_Example of energy generation(2)_6

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