问题
单项选择题 A1型题
决定大气污染程度的最基本因素是（）
A.排出量
B.排出高度
C.距污染源距离
D.气象因素
E.地形
答案
参考答案：A
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决定大气污染程度的最基本因素是（）
A.排出量
B.排出高度
C.距污染源距离
D.气象因素
E.地形
参考答案：A
| 完形填空。 | |||
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