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truongsybach
2 năm trước
Bài 1: Lượng nước trong hạt tươi chiếm tỉ lệ 19%, trong hạt khô chiếm tỉ lệ là 10%. Phơi 1000kg hạt tươi sẽ được bao nhiêu ki-lô- gam hạt khô
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