问题
选择题
日落后的黄昏,天空仍然明亮的原因,是由于大气对太阳辐射的
A．反射作用
B．散射作用
C．削弱作用
D．保温作用
答案
答案：B
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日落后的黄昏,天空仍然明亮的原因,是由于大气对太阳辐射的
A．反射作用
B．散射作用
C．削弱作用
D．保温作用
答案：B
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