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17408
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120
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온열요소들로 옳게 묶어진 것은?

Select the correct answer(s).  

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17409
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17391
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17392
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17393
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120
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17396
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17398
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17399
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17400
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17401
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17402
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17403
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120
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17404
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17405
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17406
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none