A . 83.68~104.60kJ/(kg·D.[20~25kcal/(kg·D.]B . 104.60~125.52kJ/(kg·D.[25~30kcal/(kg·D.]C . 125.52~146.44kJ/(kg·D.[30~35kcal/(kg·D.]D . 146.44kJ/(kg·D.[35kcal/(kg·D.]E . 146.44~167.36/(kg·D.[35~40kcal/(kg·D.]
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