7乾冰轉變成氣態二氧化碳的過程,稱爲:
(A)凝結(condensation )
(B)蒸發(evaporation)
(C) 昇華(sublimation )
(D)凍結(freezing)

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統計: A(0), B(6), C(39), D(0), E(0) #1103870