施行人工降雨时，是飞机在云层里撒干冰，干冰迅速_1而吸热，使云层中水蒸气急剧遇冷而_2成小冰晶，小冰晶逐渐变大，在下落过程中又_3成小水滴落下来．（填物态变化名称）_刷题宝

题干

施行人工降雨时，是飞机在云层里撒干冰，干冰迅速____而吸热，使云层中水蒸气急剧遇冷而____成小冰晶，小冰晶逐渐变大，在下落过程中又____成小水滴落下来．（填物态变化名称）

上一题下一题 0.0难度选择题更新时间:2018-05-03 10:37:53

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升华,凝华,熔化

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