A.煤 B.天然氣 C.石油 D.太陽能
A.1992 B.1997 C.2008 D.2009
A.循環(huán)經(jīng)濟(jì) B.農(nóng)業(yè)經(jīng)濟(jì) C.工業(yè)經(jīng)濟(jì) D.宏觀經(jīng)濟(jì)