A.白色B.紅色C.黃色D.無(wú)色
A.吸熱反應(yīng)向右,放熱反應(yīng)向左B.吸熱反應(yīng)向上,放熱反應(yīng)向下C.吸熱反應(yīng)向左,放熱反應(yīng)向右D.吸熱反應(yīng)向下,放熱反應(yīng)向上
A.烷烴B.酯C.鹽D.蒽醌