造成全球温室效应的主要原因和缓解温室效应危机的重要措施分别是_刷题宝

题干

造成全球温室效应的主要原因和缓解温室效应危机的重要措施分别是（）

A：煤、石油、天然气大量燃烧；营造森林绿地

B：二氧化硫等有毒气体的大量产生；种植苔藓类植物吸收二氧化硫

C：人造含氟制冷剂的泄漏；采用无氟制冷剂

D：汽车和工厂排放的废气和烟尘；收取排污费，限令整改

上一题下一题 0.0难度选择题更新时间:2012-07-17 07:47:30

答案(点此获取答案解析）

A

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任务型阅读：根据短文内容，填写下列表格。

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已知函数f（x）=x²+

\sqrt{2} (m - 1) x + \frac{m}{4}

，现有一组数据，绘制得到茎叶图，且茎叶图中的数据的平均数为2．（茎叶图中的数据均为小数，其中茎为整数部分，叶为小数部分）

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