地球表面()被水覆盖,因此有人把地球说成是蓝色星球,又叫水球。 ["50% ","60% ","70% ","80%"]
我国循环经济法律体系的基本法是() ["《循环经济促进法》 ","《宪法》 ","《环境保护法》 ","《固体废物污染环境防治法》"]
经济和社会发展的基础不包括() ["人口 ","环境 ","资源 ","科技"]
循环经济的特征不包括() ["观念先行性 ","技术先导性 ","物质循环性 ","主体单一化"]
太阳能的优点不包括() ["不受季节限制 ","方便便捷 ","没有区域局限性 ","经济环保"]
低碳经济发展的长远目标是?