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I was cooking in the kitchen when the accident took place.
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Mom is cooking in the kitchen.
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I and he are eating bones in the kitchen.
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1個回答2024-03-18
乙個。液化氣在燃燒過程中產生二氧化碳等新物質,屬於化學變化B。榨汁過程中沒有產生新的物質,屬於物理變化C。麵包發霉過程中會產生新的物質,屬於化學變化D。菜刀生鏽過程中有新物質,屬於化學變化,所以選擇B