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谚语说冬季“十雾九晴”意思是冬季大雾多出现在晴天,其原因是

A.晴天时,大气中尘埃多,凝结核多,易成雾
B.晴天时,大气中水汽的绝对含量多而成雾
C.晴天时,大气逆辐射弱,地面气温低,水汽易凝结而成雾
D.晴天时,地面水汽蒸发强易成雾
科目 地理   题型 选择题   难度 中等
知识点: 大气的受热过程 大气运动的原因和风的受力分析
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